Answers

2016-02-20T11:58:25+05:30

Mass of 1 atom of Ne = 20/6.022*10²³ g

Now,

Number of particles in 4 g of Ca,

= 4/40*6.022*10²³

= 6.022*10²² atoms

Therefore, number of atoms of Ne same as 4 g of Ca 

= 20*6.022*10²²/6.022*10²³

=20/10

=2 g


i hope it helps..........

2 3 2