In hexagonal closest-packed arrangement each spher has a coordinationnumber of

Options

A. `12`
B. `8`
C. `4`
D. `6`

Answer

1

Explanation

In the hexagonal closest packed structure the first and thrid layers are oriented in the same direciton so that each atom in the third layer lies directly above an atom in the first layer.
Each sphere has a coordination numberof `12`-six neighbors in the same layer .Three above and three below.