DP Chemistry (last assessment 2024)

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Question 21M.1.hl.TZ1.6

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1.hl.TZ1.6
Level hl Paper 1 Time zone TZ1
Command term Interpret Question number 6 Adapted from N/A
6.
[Maximum mark: 1]
21M.1.hl.TZ1.6

The diagram shows the first ionisation energies of consecutive elements in the same period of the periodic table.

Which factor explains why element X has a higher first ionisation energy than element Y?

A.  Element Y loses an electron from a different sub-level.

B.  Element Y has a smaller atomic radius.

C.  Element X has a full octet.

D.  Element Y has a greater nuclear charge.

[1]

Markscheme

A

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