IDNLearn.com makes it easy to find accurate answers to your specific questions. Ask your questions and get detailed, reliable answers from our community of knowledgeable experts.

How do metals on the periodic table tend to achieve the octet rule?


Sagot :

By either gaining or losing an electron. 

So for the halogens (group 17) they have 7 valence electrons so they need one more to have a full outer shell. They will form a bond with another element that can give an electron. Typically a halogen will bond with an alkaline metal because they have 1 valence electron in their outer shells. This sharing of electrons (covalent bond) satisfies both elements, giving them full outer shells.