2006-10-11 02:06:28 · 7 answers · asked by Anonymous in Education & Reference ➔ Home Schooling
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2006-10-11 02:33:01 · answer #1 · answered by sneha 3 · 0⤊ 1⤋
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2006-10-11 09:17:25 · answer #2 · answered by dryheatdave 6 · 0⤊ 2⤋
Hydrogen atom has the atomic mass of 1, and therefore it is the first atom to be listed in the Periodic Table. In the Periodic Table, although it is arranged in the same column with Lithium, Sodium, Potassium etc (Group 1: Alkali Metals), it does not show similar chemical characteristics with the Group 1 metals. Therefore, Hydrogen is not a Group 1 atom.
2006-10-11 09:24:27 · answer #3 · answered by West <--> East 1 · 0⤊ 2⤋
It is 1.
This is the basis for which all other atomic masses are measured....i.e. they call Hydrogen 1 and then everything else is relative to that.
2006-10-11 09:09:27 · answer #4 · answered by Robbo31 3 · 0⤊ 1⤋
The correct answer is: 1.00794(7) g/mol
General:
Name, Symbol, Number: hydrogen, H, 1
Chemical series: nonmetals
Group, Period, Block: 1, 1, s
Appearance: colorless
Atomic mass: 1.00794(7) g/mol
Electron configuration: 1s1
Electrons per shell: 1
Physical properties:
Phase: gas
Density (0 °C, 101.325 kPa): 0.08988 g/L
Melting point: 14.01 K (â259.14 °C, â434.45 °F)
Boiling point: 20.28 K (â252.87 °C, â423.17 °F)
Triple point: 13.8033 K, 7.042 kPa
Critical point: 32.97 K, 1.293 MPa
Heat of fusion(H2): 0.117 kJ·molâ1
Heat of vaporization (H2): 0.904 kJ·molâ1
Heat capacity(25 °C) (H2): 28.836 J·molâ1·Kâ1
Just in case you needed it...
2006-10-11 09:37:49 · answer #5 · answered by DBG 2 · 0⤊ 1⤋
I believe it is 1?
2006-10-11 09:07:56 · answer #6 · answered by Webballs 6 · 0⤊ 1⤋
HYDROGEN ATOMI WEIGHT IS 1 UNIFIED MASS
2006-10-11 09:16:04 · answer #7 · answered by kunobabimadhu 1 · 0⤊ 2⤋