Different atoms are merely combinations of protons, electrons and neutrons in different numbers. If you make a mixture of these fundamental particl However, it is neither reactive nor abundant. The big bang is the accepted scientific (if perhaps not religious) explanation as to how the universe was formed. Since Helium and Hydrogen have 1 and 2 electrons subsequently we can assume that they were the first elements to be created. No atoms or elements were formed yet. Why do helium and hydrogen have different emission wavelengths? It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. It suggests that Hydrogen and Helium were the first elements to form. How long did hydrogen and helium form before? It was designed and built by the Zeppelin Company (Luftschiffbau Zeppelin GmbH) on the shores of Lake Constance in Friedrichshafen, Hydrogen and helium are the only elements that (as you as we know it today, isn't the first table of elements. Helium, too, is a gas. The collisional pressure eventually led a few helium atoms to share their electrons with protons. thx. The U.S. continued to control the world's helium supply after the war (this is why the famous German zeppelin Hindenburg was filled with hydrogen when it exploded in 1937). So, in the first 20 elements, there are three noble gases, namely, Helium (He), Neon (Ne), and Argon (Ar). Primordial nucleosynthesis is believed by most cosmologists to have taken place in the interval from roughly 10 seconds to 20 minutes after the Big Bang , [2] and is calculated to be responsible for the formation of most of the universe's helium as the isotope helium-4 ( 4 He), along with small amounts of the hydrogen isotope deuterium ( 2 H or D), the helium isotope helium-3 ( 3 The first elements in the periodic table are hydrogen, helium, It does not occur in nature in compound form. Stars went on to forge all the elements that make up our rich, chemical cosmos of Question 16. Between the tenth second and twentieth minute after the Big Bang, the three lightest elements on the periodic table were produced: hydrogen, helium, and a very small amount of lithium. Composition of the first stars The first generation of stars, also known as Population III stars, were made almost entirely of hydrogen and helium. is due to helium's inertness (as mentioned by Ethan). Hydrogen (H) and Helium (He). The 73% hydrogen and 25% helium abundances that exists throughout the universe today come from that condensation period during the first three minutes in the history of the universe. deuterium ( a hydrogen isoptope) nuclei were formed when protons and neutrons combined. A thermonuclear weapon, fusion weapon or hydrogen bomb (H bomb) is a second-generation nuclear weapon design.Its greater sophistication affords it vastly greater destructive power than first-generation atomic bombs, a more compact size, a lower mass, or a combination of these benefits.Characteristics of nuclear fusion reactions make possible the use of non-fissile Aside from them there were tiny amounts of lithium and beryllium and thats it. Scientists reckon that Hydrogen nuclei were the first to form (being the most simple element), around a few milliseconds after the `big bang`. So thats why, by mass, we say 75-76% was hydrogen and 24-25% was helium. So, due to the presence of different energy levels, there is emission of different wavelengths in helium atom. Answer: During the era of nuclei, the universe consisted of a hot plasma of hydrogen nuclei, helium nuclei, and free electrons.If a nucleus managed to capture an electron to form a neutral atom, one of the photons quickly ionized it. Yes, they do. In fact, these two elements are so common that, together, they make up 99.9% of the matter in the universe. LZ 129 Hindenburg (Luftschiff Zeppelin #129; Registration: D-LZ 129) was a German commercial passenger-carrying rigid airship, the lead ship of the Hindenburg class, the longest class of flying machine and the largest airship by envelope volume. Elements of first group have one valence electron each in their atoms. Two sets of 18 O isotope experiments were therefore designed: First, to figure out the natural exchange rate as the background, we tested 18 O as a It wasn't until people figured out that specific elements will absorb specific wavelength of light and started looking at the sun that Helium was discovered. Question 11. There are different interactions present in helium atom such as electron-electron repulsion and nuclei-electron repulsion. In physical cosmology, Big Bang nucleosynthesis (abbreviated BBN, also known as primordial nucleosynthesis) is the production of nuclei other than those of the lightest isotope of hydrogen (hydrogen-1, 1 H, having a single proton as a nucleus) during the early phases of the Universe.Primordial nucleosynthesis is believed by most cosmologists to have taken place in The low mass elements hydrogen and helium were produced in the hot dense conditions of the birth of the universe itself the birth life and the death of a star is described in terms of nuclear reatctions the chemical elements that make up the matter we observe throughout the universe were created in these reactions For example, Nitrogen is indicated as N, Aluminum as Al, Helium as He, Iodine as I. On August 18, 1868, Janssen managed to do just that. Once cooling began, hydrogen atoms could interact with helium hydride, leading to the creation of molecular hydrogen the molecule primarily responsible for the formation of the first stars. The most common elements, like carbon and nitrogen, are created in the cores of most stars, fused from lighter elements like hydrogen and helium. Light elements (namely deuterium, helium, and lithium) were produced in the first few minutes of the Big Bang, while elements heavier than helium are thought to have their origins in the interiors of stars which formed much later in the history of the Universe. In fact, only light elements, like hydrogen and helium, were created at the start of the universe. Elements in Group 1 have 1 electron in their outermost shell. The results suggest that the last patches of neutral hydrogen gas were being ionized at that time. The first stars in the Universe had much less carbon and their lives were somewhat different from modern stars. In the current most widely accepted scenario the universe originated from a big bang, which at first gave a very compact very high energy plasma Therefore, hydrogen emission wavelength is different from helium emission wavelength. That is why, noble gas elements were discovered at a later stage. There were electrons and protons flying around in a great super-hot plasma. In the early universe, once the deuterium bottleneck was cleared, the newly formed deuterium could undergo further nuclear reactions to form Helium. They were filled with highly flammable hydrogen.

Protons and neutrons began forming shortly after, from about 10-6 to 1 second after the Big Bang. Hydrogen is the chemical element with the symbol H and atomic number 1. As the universe continued to expand and cool, things began to happen more slowly. Ee can't say any thing about it but this whole universe is made up of hydrogen. Due to high temperature two molecules of hydrogen converted into he A: Immediately (much less than a second) after the Big Bang, the universe was both too hot and too dense for elements to form. Hydrogen didnt appear until the universe had spread out and subsequently cooled enough for the first protons and neutrons, and later simple atoms, to form. why is that? All stars are composed of hydrogen and helium, and depending on age and generation, they may have varying amounts of heavier elements. First of all, theres a reason elements other than hydrogen and helium are created by nucleosynthesis in stars. The emission spectrum of a chemical element or compound is the series of lines that represent the wavelengths of electromagnetic radiation emitted by that chemical The rings were named in the order they were discovered.

Helium is the most common element in the universe besides hydrogen, but despite this universal abundance it is surprisingly difficult to come across on Earth. There are different interactions present in helium atom such as electron-electron repulsion and nuclei-electron repulsion. According to our theory of solar system formation, which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size? It is the second lightest element. The Big Bang theory also involves a tremendous release of radiation billions of years ago, still able to be detected and measured as of 2015. The first elements in the periodic table are hydrogen, helium, lithium, beryllium, boron. It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. For elements that are lighter than Iron, those elements are synthesized during various phases in the evolution of massive stars. At standard conditions hydrogen is a gas of diatomic molecules having the formula H 2.It is colorless, odorless, tasteless, non-toxic, and highly combustible.Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter. Helium, too, is a gas. At this point, the universe was a few seconds older and much colder (only one billion Kelvin). The protons and neutrons came together to form the nucleus/ion of the first element Hydrogen (H), which further fused with another hydrogen nucleus to form a Helium (He) nucleus. TIL a Goose's beak is composed of 4 elements: Hydrogen, Oxygen, Nitrogen, and Potassium. Scientists have inferred that helium hydride was this first, primordial molecule. Nobody really knows what happened before the Big Bang. There was no Universe is an unwarranted assumption. It is quite possible that there was a But even before this, the fundamental forces and particles were also forged. Once the bottleneck is overcome, the remaining reactions are able to be completed. Between the tenth second and twentieth minute after the Big Bang, the three lightest elements on the periodic table were produced: hydrogen, helium, and a very small amount of lithium. This concept also applies in nucleosynthesis of heavier elements. This name was chosen because this group (column in the periodic table) is chemically unreactive under conditions that favor human life. Explanation: Hydrogen, helium and lithium were forged 13.8 billion years ago about 500,000 years after the universe came into existence. The gases elements hydrogen and helium collapsed to form the sun, while most of the other heavier elements coalesced in the inner rocky planets, including Earth. They exist as gases at room temperature and are the two most common elements in the universe, with hydrogen making up about 75% of all matter. First: Hydrogen and Second: Helium. In stars less massive than the Sun, this is the only reaction that takes place. Short answer: Hydrogen and helium (and tiny amounts of lithium). These two elements comprise around 98% of all the elements in the universe, with hydrogen at 75% and helium at 23%. For the next several hundred million years only these four elements existed. In the early universe, the right conditions were present only long enough to synthesize two elements: hydrogen and helium. All the elements of group 1 have the same valency of 1. He became the first person to observe helium, an element never before seen on Earth, in the solar spectrum. When the universe started to cool (from expansion), Hydrogen is the first element to have been formed since it only requires an electron to bind to a proton (two constituents present). spectra).. Hydrogen and helium are the most common elements throughout the universe because they were the only elements present when the universe was young. The birth, life, and death of a star is described in terms of nuclear reactions. At that point, around three quarters of the material in the universe was hydrogen atoms and the remaining quarter was helium atoms. Earths Atmosphere has Nitrogen 78% / Oxygen 21%. So why, then, do the layers of Earths atmosphere have a totally different composition: the nitrogen oxygen ratio is 78 percent to 21 percent . These were mainly helium and hydrogen, which are still by This means that helium has been continuously generated ever since the earth was formed. a proton would then fuse with tritium to form helium nuclei. Their relative abundance (by weight) was 75% hydrogen and 25% helium.

The ratio of hydrogen, helium and other elements suggests that the entire Universe was once very dense, causing it to fuse hydrogen into lighter elements as though it were the core of a single star.