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NEETChemistrys Block Elements

What is the primary reason for the low melting and boiling points of alkali metals?

Options

  1. AStrong metallic bonding
  2. BHigh number of valence electrons
  3. CWeak metallic bonding due to a single valence electron
  4. DPresence of multiple valence electrons

Correct answer

C. Weak metallic bonding due to a single valence electron

Step-by-step solution

The low melting and boiling points of alkali metals can be attributed to their weak metallic bonding, which is primarily due to the presence of only a single valence electron in each atom. This single valence electron experiences relatively weak forces of attraction to the positively charged metal ions, leading to lower melting and boiling points.

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