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Date May 2011 Marks available 1 Reference code 11M.1.hl.TZ1.5
Level HL Paper 1 Time zone TZ1
Command term Apply Question number 5 Adapted from N/A

Question

What is the electron configuration of vanadium?

A.     1s22s22p63s23p63d24s3

B.     1s22s22p63s23p63d34s2

C.     1s22s22p63s23p63d44s1

D.     1s22s22p63s23p63d5

Markscheme

B

Examiners report

On one of the G2’s it was stated that it would have been better if the 3d level was placed after the 4s level. It is true that in many textbooks that the electron configuration of V is written as 1s22s22p63s23p64s23d3. However, most candidates (72.19%) gave B as the correct answer.

Syllabus sections

Core » Topic 2: Atomic structure » 2.2 Electron configuration
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