What is the mass of ONE magnesium atom?

1 Answer
anor277
Jan 4, 2018

#1/2xx2/3xx3/8# #"SFA"#...

Explanation:

We got the mass of Avogadro's number of magnesium atoms...

i.e. #24.31*g*mol^-1#...and we divide this thru by Avogadro's number...

#(24.31*g*mol^-1)/(6.022xx10^23*mol^-1)=??*g#.

Of course, #24.31*g# is an average atomic mass...in the context we should speak of the mass of individual isotopes, i.e. #""^24Mg, ""^25Mg, ""^26Mg#?

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