Hydrogen is a diatomic gas in it's elemental state, which is different from the other group one metals (and similar to the group … Because hydrogen forms compounds with oxidation numbers of both +1 and -1, many periodic tables include this element in both Group IA (with Li, Na, K, Rb, Cs, and Fr) and Group VIIA (with F, Cl, Br, I, and At). It is present as a gas in the atmosphere only in tiny amounts – less than 1 part per million by volume. Group-1 or IA Elements. Anonymous. Hydrogen (symbol:H) is a chemical element.Its atomic number is 1. On Earth, hydrogen is found in the greatest quantities as water. On MathsGee Skills QnA students, teachers and enthusiasts can ask and answer any interview questions. Any hydrogen that does enter the atmosphere quickly escapes the Earth’s gravity into outer space. Atomic Number – Protons, Electrons and Neutrons in Hydrogen. At standard temperature and pressure, hydrogen has no color, no smell and no taste.It belongs to nonmetal, and it is highly flammable.It is a diatomic gas with the molecular formula H 2.Its atomic mass is 1.00794 amu, making hydrogen the lightest element.. Hydrogen is the most abundant of the chemical elements. In this sense, hydrogen is more like a halogen and so you could say it is in group 7 So, hydrogen … Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Every Learner Deserves Support Whilst Studying at Home Alkali metals do not do this, so in this sense hydrogen is not in group 1 also, hydrogen can be reduced to form a negative ion (H-) in compounds like sodium hydride (NaH). There are many reasons for including hydrogen among the elements in Group IA. Because Hydrogen and Helium belong to different periodic 'groups'. You can't call it an alkali metal because it is not a metal. 1 decade ago. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Starting at the top we find hydrogen (H). 0 … Group-1 or IA in the periodic table contains seven elements like hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium with the general electronic configuration of valence electron = ns 1, where n = 1 to 7. Hydrogen's Placement in the Periodic Table. Metal. While hydrogen sits in Group I, it is NOT an alkali metal. To which group of elements does hydrogen belong: Metals, Non – Metals or Metalliods? The alkali metals cannot do this. When we told you about families, we said that they were groups of elements that react in similar ways. 2 0. Hydrogen belongs in group 1 of the periodic table along with the Alkali Metals. The two hydrogens are the same, but some periodic tables show hydrogen in both places to emphasize that hydrogen isn't really a member of the first group or the seventh group. That element is NOT in the family. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Hydrogen reacts with oxygen to form an oxide, which all group 1 elements do as well. Reason why hydrogen can fit into group 7 ( less electron) Hydrogen has one electron less than the nearest noble gas, so do all the halogens. The Hydrogen element belongs to the 'Hydrogen' group, whereas the Helium element belongs to the 'noble gas' group. But wait. Hydrogen is a very special element of the periodic table and doesn't belong to any family. 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