Chemistrymedium · Past Paper
The valence of an element with atomic number 17 is:
A1
B7
C17
D2
✓ Correct Answer: A — 1
Atomic number 17 is Chlorine (2, 8, 7). It needs 1 electron to be stable, so its valency is 1.
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✓ Correct Answer: A — 1
Atomic number 17 is Chlorine (2, 8, 7). It needs 1 electron to be stable, so its valency is 1.
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