Coordination number of caesium in caesium chloride is
- 8
- 6
- 4
- 12
The Correct Option is A
Solution and Explanation
In case of the periodic table we are well aware that as we move down the group then the size of the cation increases and as a result of the increase in the number of the shell as we move down. Thus we find that the size of the ion increases and hence caesium has a very large size compared to that of sodium. Hence there is a change in structure: the cesium ions do not form a lattice similar to that of sodium but rather we find that it occupies the centre of the cube that there are $8$ chloride ions surrounding it. Also as the ratio of $CsCl$ is also as that of sodium hence we find that the coordination number remains as $8$ in this case.
Hence the answer to this question is that the coordination number of cesium in cesium chloride is $8$.
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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 don’t 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 5°C).
- Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.