Question

Which of the following weighs the least?

पर्याय

• 2 g atom of N

• 3 x 10²⁵ atoms of carbon

• 1 mole of sulphur

• 7 g silver

Answer 1

7 g silver

Explanation:

wt. of 2 g atom of N = 2 x 14 = 28 g

wt. of 3 x 10²⁵ atoms of carbon = `(12 xx 3 xx 10^25)/(6.022 xx 10^23)` = 597.7 g

wt. of 1 mole of sulphur= 32 g

silver = 7 g

∴ silver has the least weight.