Question

How to do valency make me to understand

Answer 1

Answer:

The valency of the atom of an element is determined by the number of electrons in its outermost shell, i.e. valence shell. For atoms with less than 4 or less electrons in the valence shells (i.e. valence electrons), valency= no. of electrons. For atoms with more than 4 valence electrons, valency = 8 - (no.

Answer 2

Explanation:

Method to find Valency

If the number of electrons in the outer shell is between one to four, the compound is said to have positive valency. For compounds with electrons four, five, six, or seven, the valency is determined by subtracting the electron from eight. All noble gases except for Helium have eight electrons.

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