Question

There are three elements E, F, G with atomic numbers 19, 8 and 17 Classify the elements as metals and non-metals

Answer 1

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Elements F & G are Non- Metals

Element E is a Metal

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Answer 2

E is a metal with configuration 2,8,8,1,thus has 1 valence electron.

F is a non metal with configuration 2,6.

G is a non metal with configuration 2,8,7.

E resembles potassium, F resembles Oxygen and G resembles Chlorine element.