What is the total number of atoms in 3.0 grams sample of neon?

The total number of atoms : N = 8.95 x 10²²

Given

3 grams of Neon

Required

The number of atoms

Solution

mol of Neon :

= mass : Ar Neon

= 3 g : 20,1797 g/mol

= 0.1487

The number of atoms :

N = n x No(No=Avogaro's number)

N = 0.1487 x 6.02 x 10²³

N = 8.95 x 10²²

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.