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Chemistry · PYQ NEET UG 2026

हिन्दी

The correct statement is

  1. A
    Boron has a maximum covalency of four.
  2. B
    Beryllium has three valence orbitals.
  3. C
    Magnesium has a maximum covalency of four.
  4. D
    Aluminium has five valence orbitals.
View Answer & Solution

Correct answer · Option A

Boron has a maximum covalency of four.

Explanation

Due to the absence of vacant d-orbitals, boron can only expand its octet to a maximum covalency of 4 (e.g., [BF4]-).

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