Question

Number of neutrons in 23 gram of sodium metal is
1) 72.264*10^23
2) 6.022*10^23
3) 12
4) 11

Answer 1

1)72.264*10^23 as 1 atom of Na has 12 neutrons, so 1 mole of Na would have (12*6.023*10^23)

hope this helps!