What is the mass of 3.0 x 10^23 atoms of neon

Explanation:

Formula

No.of atoms =

G.mass/atomic mass of neon ×6.022×10^23

Putting the values

Given Mass of neon=

3.0×10^23× 20.17/6.022×10^23

=10.048 grams

it's c. elements are placed in rows based on how may valencies electrons have.

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