O-LevelChemistryBonding & Structure5070/12 · May/June 2023 · Q41 Mark

Element X and element Y react together to form a compound. The electronic configurations of X and Y are X = 2,8,3 and Y = 2,6. Which row shows the electron transfer that takes place and the type of compound formed?

A2 atoms each lose 3 electrons; 3 atoms each receive 2 electrons; covalent

B2 atoms each lose 3 electrons; 3 atoms each receive 2 electrons; ionic

C2 atoms each receive 3 electrons; 3 atoms each lose 2 electrons; covalent

D2 atoms each receive 3 electrons; 3 atoms each receive 2 electrons; ionic

✓ Correct answer

B: 2 atoms each lose 3 electrons; 3 atoms each receive 2 electrons; ionic

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 4.

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