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Date May 2019 Marks available 1 Reference code 19M.1.sl.TZ2.9
Level SL Paper 1 Time zone TZ2
Command term Question number 9 Adapted from N/A

Question

How does a lithium atom form the most stable ion?

A. The atom gains a proton to form a positive ion.

B. The atom loses a proton to form a negative ion.

C. The atom loses an electron to form a positive ion.

D. The atom gains an electron to form a negative ion.

Markscheme

C

Examiners report

One of the most straight-forward questions on the paper about how lithium forms its most stable ion. It was answered correctly by 87 % of the candidates.

Syllabus sections

Core » Topic 4: Chemical bonding and structure » 4.1 Ionic bonding and structure
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Core » Topic 4: Chemical bonding and structure
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