Question

if an atom has 7 electrons in its valence shell. Then its valency is?

Answer 1

Answer:

Then its valency will be +1

Answer 2

Answer:

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Explanation:

If an atom is having 7 electrons in its L or last shell, then,

1.Atomic number of the element is 9 (total number of electrons.)

2.The valency of the element is -1 (7-8= -1, valency- number of valence electrons- total number of electrons in the last shell).

3.The element if Fluorine.