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NEETChemistrys Block Elements

Which of the following ions is smaller than the parent atom among alkali metals?

Options

  1. AM+ (Monovalent ion)
  2. BM2+ (Divalent ion)
  3. CM3+ (Trivalent ion)
  4. DM- (Negative ion)

Correct answer

A. M+ (Monovalent ion)

Step-by-step solution

Among alkali metals, the monovalent ions (M+) are smaller than the parent atom. This is because the loss of one electron results in a decrease in electron repulsion and a smaller ionic radius.

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