O-LevelChemistryAtomic Structure5070/12 · May/June 2022 · Q311 Mark

Selenium is in Group VI and gallium is in Group III. Which prediction can be made from this information?

Agallium atom has three more protons than a selenium atom.

BGallium is more likely to form negative ions than selenium.

CSelenium atoms have fewer valence electrons than gallium atoms.

DSelenium has more non-metallic character than gallium.

✓ Correct answer

D: Selenium has more non-metallic character than gallium.

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 31.

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