A metal π forms hexagonal close-packed structure. The total number of voids in 0.02 mol of it is _______ $Γ10^{21}$. (Nearest integer).
( Given $N_A=6.02Γ10^{23}$)
( Given $N_A=6.02Γ10^{23}$)
Correct Answer: 36
Solution and Explanation
- Total number of voids in 0.02 mol of hcp: \[ \text{No. of voids} = 18 \times 6.02 \times 10^{23} \times 0.02 \] \[ = 3.6 \times 10^{21} \]
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Concepts Used:
Solid State
Solids are substances that are featured by a definite shape, volume, and high density. In the solid-state, the composed particles are arranged in several manners. Solid-state, in simple terms, means "no moving parts." Thus solid-state electronic devices are the ones inclusive of solid components that donβt change their position. Solid is a state of matter where the composed particles are arranged close to each other. The composed particles can be either atoms, molecules, or ions.
Types of Solids:
Based on the nature of the order that is present in the arrangement of their constituent particles solids can be divided into two types;
- Amorphous solids behave the same as super cool liquids due to the arrangement of constituent particles in short-range order. They are isotropic and have a broad melting point (range is about greater than 5Β°C).
- Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.