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Question: Answered & Verified by Expert
Consider the following statements
1. Cs+ ion is more highly hydrated than other alkali metal ions
2. Among the alkali metals Li, Na, K and Rb, Lithium (Li) has the highest melting point
3. Among the alkali metals, only lithium form a stable nitride by direct combination.
O these statements
Chemistrys Block ElementsNEET
Options:
  • A 1, 2 and 3 are correct
  • B 1 and 2 are correct
  • C 1 and 3 are correct
  • D 2 and 3 are correct
Solution:
1618 Upvotes Verified Answer
The correct answer is: 2 and 3 are correct
Li+>Na+>K+>Rb+>Cs+ (order of hydration)
As size of cation increases, solvation decreases.
Li due to its small size can form nitrides as it can stabilize the electron cloud of nitride ion.

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