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. Hydrogen belongs in group 1 of the periodic table along with the Alkali Metals. Atomic Number – Protons, Electrons and Neutrons in Hydrogen. In this sense, hydrogen is more like a halogen and so you could say it is in group 7 So, hydrogen … You can't call it an alkali metal because it is not a metal. Because Hydrogen and Helium belong to different periodic 'groups'. On Earth, hydrogen is found in the greatest quantities as water. 1 decade ago. The Hydrogen element belongs to the 'Hydrogen' group, whereas the Helium element belongs to the 'noble gas' group. That element is NOT in the family. 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. The alkali metals cannot do this. To which group of elements does hydrogen belong: Metals, Non – Metals or Metalliods? Hydrogen is a very special element of the periodic table and doesn't belong to any family. Hydrogen (symbol:H) is a chemical element.Its atomic number is 1. 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. 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. 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). 2 0. There are many reasons for including hydrogen among the elements in Group IA. 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. Metal. 0 … When we told you about families, we said that they were groups of elements that react in similar ways. While hydrogen sits in Group I, it is NOT an alkali metal. Anonymous. But wait. Every Learner Deserves Support Whilst Studying at Home Group-1 or IA Elements. 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. Hydrogen's Placement in the Periodic Table. Starting at the top we find hydrogen (H). 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. 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). Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Hydrogen reacts with oxygen to form an oxide, which all group 1 elements do as well. It is present as a gas in the atmosphere only in tiny amounts – less than 1 part per million by volume. 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