Determine the identity of the element that contains exactly three 4p electrons in the ground state

Arsenic (As)

Explanation:

The electron configuration of arsenic is; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 or [Ar]4s2 3d10 4p3 for short.

Arsenic is a group 15 element. All group 15 elements have outermost electron configuration of ns^2 np^3. Arsenic is the only member of the group that possesses exactly three electrons in the 4p orbital.

Hence As is the element we need to identity in the question.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

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explanation:

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