DP Chemistry (last assessment 2024)

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Question 21N.2.sl.TZ0.2

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Date November 2021 Marks available [Maximum mark: 2] Reference code 21N.2.sl.TZ0.2
Level sl Paper 2 Time zone TZ0
Command term Explain Question number 2 Adapted from N/A
2.
[Maximum mark: 2]
21N.2.sl.TZ0.2

Explain the general increase in trend in the first ionization energies of the period 3 elements, Na to Ar.

[2]

Markscheme

increasing number of protons

OR

increasing nuclear charge ✔

 

«atomic» radius/size decreases

OR

same number of shells/electrons occupy same shell

OR

similar shielding «by inner electrons» ✔

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