DP Chemistry (last assessment 2024)

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Question 22N.1.hl.TZ0.4

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.4
Level hl Paper 1 Time zone TZ0
Command term Deduce Question number 4 Adapted from N/A
4.
[Maximum mark: 1]
22N.1.hl.TZ0.4

Successive ionization energies of an element, X, are shown.

What energy, in kJ mol−1, is required for element X to reach its most stable oxidation state in ionic compounds?


A.  740

B.  1450

C.  2190

D.  7730

[1]

Markscheme

C

Examiners report

Only just over 50% of candidates correctly calculated the energy required to convert an atom to its most stable ion, given successive ionisation energies. The ionisation energy corresponding to the loss of the final electron (B) was the distractor most commonly chosen.

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