To how many significant figures would you need to express the mass of an hydrogen-1 atom in

amu

to notice the change in mass that occurs when it gains an electron

Question

Lilliana Carlson

Chemistry

20 January, 13:21

To how many significant figures would you need to express the mass of an hydrogen-1 atom in

amu

to notice the change in mass that occurs when it gains an electron

+4

Answers (1)

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Johnny Wang · Answer 1

Five significant figures

Mass of H-1 atom = 1.0078 u

Mass of electron = 0.0006 u

Total mass = 1.0084 u

You would have to express the mass of a hydrogen atom as 1.0078 u (five significant figures) to notice the change in mass as it gains an electron.

To how many significant figures would you need to express the mass of an hydrogen-1 atom inamuto notice the change in mass that occurs when it gains an electron

To how many significant figures would you need to express the mass of an hydrogen-1 atom in

amu

to notice the change in mass that occurs when it gains an electron