Year: 2022
Topic: Some Basic Concepts of Chemistry
Time :
1.
Copper crystallises in fcc unit cell with cell edgelength of \(3.608 \times 10^8\) cm. The density of copper is 8.92 g cm
-3
. Calculate the atomic mass of copper.
(1). 63.1u
(2). 31.55 u
(3). 60 u
(4). 65 u