Anon-metallic atom(at. no. 9) forms a molecule of the same, containing a single covalent bond. give reason

What does x represent in the formula for the compound xcl4?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

I’m an electrically neutral atomic any element, there are equal numbers of