Science, asked by syedy, 1 year ago

write short note on valency

Answers

Answered by fsoniasingha
42
hey user
here's your answer

Valency is the number of electrons at its outermost shell or its atomic charge, some elements have several charge like sulfur it has -2, +4, +6 And nitrogen +5 , -3 . the negative charge means the elements wants how many more electrons to fill its shell like nitrogen it has -3 so it still needs 3 electrons. The positive charge means how many electrons it wants to lose like sodium it has a charge of +1 so it wants to loses 1 electron.

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Answered by sushantsinghv95
26

Valence of an atom.

Explanation:

The number of electrons that an atom needs to accept , donate or share in order to attain stability is said to be its valency.

If an atom donates electrons to gain stability it is said to have a positive valency. For example, sodium atom donates 1 electron to chlorine atom to become stable.

But, if an atom accepts electrons to attain a stable state, it is said to have a negative valency. For example, chlorine accept 1 electron from sodium to gain stability.

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