Chemistry
State the number of neutrons in each of the atoms A to E. Also state which of the atoms A to E is a metal.
Atomic Structure
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Answer
Number of neutrons [n] = Mass number [A] – Atomic number [Z]
A → n = 1 – 1 = 0
B → n = 16 – 8 = 8
C → n = 14 – 7 = 7
D → n = 23 – 11 = 12
E → n = 35 – 17 = 18
D is a metal as it has the electronic configuration [2, 8, 1] and will give one electron to attain a stable octet.
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