Question

what is vakency and how to find it? Explain briefly with examples.​

Answer 1

Explanation:

Valency is combining capacity of atom and it is find through electronic configuration .It is found in two way

1. Ground state&
2. Excited state

• In this if in its outermost shell octet is complete then the atom has noble gas configuration and it is stable and in case of holding noble gases configuration the atom which is either need to loose and gain electron is valency.

Answer 2

valency means the combining capacity of an element.

Ex The valency of oxygen is -2

because the nearest noble gas to oxygen is neon and the atomic number of neon is 10 so oxygen needs to atom from gain 2 atoms to acquire inert gas configuration.

another example is magnesium atomic number of magnesium is 12 as the nearest noble gas to it is neon and magnesium needs to lose 2 atoms to attain inert gas configuration so its valency is + 2

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