Multiple choice

The electronic configurations of four elements are given as follows:

  1. [Xe] 6s1 2. [Xe] 4f14 5d1 6s2 3. [Ar]4s24p5 4. [Ar]3d74s2

Which of the following statements about these elements is not correct?

  1. 1 is a strong reducing agent.

  2. 2 is a d-block element.

  3. 3 has high electron affinity.

  4. 4 shows variable oxidation state.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

[Xe] 4f14, 5d1, 6s2 is not a d-block element. It is lutetium and is present in lanthanide series. It is an f-block element.

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