Chemistrymedium · Past Paper
The valency of an element with atomic number 13 is:
A1
B2
C3
D4
✓ Correct Answer: C — 3
Atomic number 13 is Aluminium (2, 8, 3). It loses 3 electrons to become stable, so its valency is 3.
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✓ Correct Answer: C — 3
Atomic number 13 is Aluminium (2, 8, 3). It loses 3 electrons to become stable, so its valency is 3.
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