Question

sodium combines with chlorine , in its molecule form valency is _____​

Answer 1

Answer:

Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. It is easiest for sodium to lose its electron and form a +1 ion, and for chlorine to gain an electron, forming a -1 ion. ... Ionic bonds between each atom forms a relatively strong bond and a three-dimensional, cubic structure.

Answer 2

Answer:

Valency of an element is related to the number of electrons present in the outermost shell. It either looses, gains or shares electrons of the valence shell in order to combine with other elements to form stable compounds.

Valency of an element is related to the number of electrons present in the outermost shell. It either looses, gains or shares electrons of the valence shell in order to combine with other elements to form stable compounds.Valency of chlorine is taken as 1 because it gains one electron from other atoms to attain stability and form a molecule.