Which type of element has an electron configuration of 1s22s22p63s23p64s1? question 1 options: alkali metal alkaline earth metal noble gas halogen

Explanation:

The elements of group IA are known as alkali metals. They have following electronic configuration.

Note:

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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