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Chemistry · PYQ NEET UG 2026

हिन्दी

Assertion A : Generally, 3d transition metals have high melting points. Reason R : Involvement of 3d-electrons in addition to 4s-electrons in the interatomic metallic bonding. In light of the above statements, choose the most appropriate answer from the options given below:

  1. Both A and R are correct and R is the correct explanation of A.
  2. Both A and R are correct and R is NOT the correct explanation of A.
  3. A is correct but R is not correct.
  4. A is not correct but R is correct.

Correct answer · Option 1

Both A and R are correct and R is the correct explanation of A.

Explanation

Due to the involvement of both (n-1)d and ns electrons in metallic bonding, transition metals have strong interatomic bonding leading to high melting points.
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