Question

how to hielium and argon have zero velocity explain​

Answer 1

Explanation:

Helium has two electrons in its only energy shell while Argon and Neon have 8 electrons in their valence shells. As these have maximum number of electrons in their valence shells they do not have any tendency to combine with other elements. Hence they have a valency equal to zero.

pl make me brainlist pl pl

Answer 2

Answer:

As there are no free electrons in the valence shell and the elements are already in a stable state, the noble gases' valency is zeroHelium has two electrons in its only energy shell while Argon and Neon have 8 electrons in their valence shells. As these have maximum number of electrons in their valence shells they do not have any tendency to combine with other elements. Hence they have a valency equal to zero.

Please mark me as a brainlist