2006-07-23 19:16:20 · 12 answers · asked by maher787 1 in Education & Reference ➔ Other - Education
Hydrogen
2006-07-23 19:19:31 · answer #1 · answered by enatsek 1 · 0⤊ 0⤋
Lightest Atom Symbol
2016-12-16 11:13:22 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Hydrogen. H-1
2016-03-16 22:44:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The Hydrogen atom is the simplest of all atoms consisting of a single proton "orbited" by an electron. Because of its one proton we say it has an Atomic Number of 1,
Atomic Number: 3: Atomic Radius: 152 pm: Atomic Symbol: Li: Melting Point: 180 ... Lithium is the lightest of all metals, with a density only about half
2006-07-23 19:28:24 · answer #4 · answered by selvi_mks89 3 · 0⤊ 0⤋
hydrogen is the lightest of all the elements and has the atomic number 1.second is helium
2006-07-23 20:04:04 · answer #5 · answered by Whamper 3 · 0⤊ 0⤋
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The atomic number is the number of protons in the nucleus of an atom. It corresponds with periodic number on the periodic table. The mass number of an atom is the number of neutrons and protons in an atom.
2016-04-08 17:30:07 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Hydrogen?
2006-07-23 19:20:04 · answer #7 · answered by PAT A 2 · 0⤊ 0⤋
hydrogen is the lightest, its atomic weight 1.0079, chemical symbol 'H'. Henry cavendish of england discovered it in 1766.
2006-07-23 19:28:28 · answer #8 · answered by whatsinaname 2 · 0⤊ 0⤋
Hydrogen!!
2006-07-23 19:19:05 · answer #9 · answered by Steven B 6 · 0⤊ 0⤋
it's Hydrogen.
2006-07-23 19:27:35 · answer #10 · answered by locker 2 · 0⤊ 0⤋