Multiple choice

Match the column – I (first row transition element) with column – II (electronic configuration) and select the correct option.

 
Column – I
Column – II
P. Copper 1. [Ar] 3d3 4s2
Q. Chromium 2. [Ar] 3d5 4s1
R. Iron 3. [Ar] 3d6 4s2
S. Vanadium 4. [Ar] 3d10 4s1

  1. P - 1, Q - 2, R - 3, S - 4

  2. P - 3, Q - 2, R - 4, S - 3

  3. P - 4, Q - 2, R - 3, S - 1

  4. P - 4, Q - 3, R - 2, S - 1

  5. P - 3, Q - 2, R - 4, S - 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Electronic configuration of copper (29Cu) is [Ar] 3d10 4s1. Electronic configuration of chromium (24Cr) is [Ar] 3d5 4s1. Electronic configuration of iron (26Fe) is [Ar] 3d6 4s2. Electronic configuration of vanadium (23V) is [Ar] 3d3 4s2.

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