An element has seven electrons in its valence shell, it's valency is _____?
An element has seven electrons in its valence shell, it's valency is _____?
کسی عنصر کے والنس شیل میں سات الیکٹران ہوتے ہیں ، اس کی تندرستی _____ ہے؟
Explanation
An element with 7 valence electrons needs 1 more electron to complete its octet.
Therefore, its valency is 1, as it tends to gain 1 electron during bonding.