Question 37 of 62beginner🔧 ApplyNumerical2 marks

The diameter of zinc atom is 2.6 Å. Calculate (a) radius of zinc atom in pm and (b) number of atoms present in a length of 1.6 cm if the zinc atoms are arranged side by side lengthwise.

(a)
Answer

130 pm

(b)
Answer

6.15×1076.15 \times 10^7 atoms

Explanation

The radius is half of the diameter. To find the number of atoms arranged side by side, divide the total length by the diameter of a single atom. Ensure all units are converted consistently before calculation.