Question

Number of electrons gained or lost by an element is called its

Answer 1

Number of electrons gained or lost by an element is called its Valency

Explanation:

• To attain octet except for the noble gases or inert gases all the other elements either donates or gains or shares electron present in their valence shell and it is called Valency.
• As metals has electrons less than 4, it readily loses electrons to attain octet.
• The non-metal has more than 4 electrons. Thus it readily gains the electrons to attain octet.
• As metalloids have 4 valence electron, it shares the electron to form an octet.
• When an electron is lost or donated, the valency is denoted with a '+' symbol, whereas if an electron is gained, the valency is denoted with '-' symbol.

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Answer 2

Answer:

answer is valency.

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