Consider four atoms from the second period: lithium, beryllium, boron, carbon, and nitrogen. which of these elements has the lowest electronegativity value? lithium beryllium boron carbon nitrogen

Option (a) is the correct answer.

Explanation:

It is known that value of electronegativity increases when we move from left to right in a periodic table.

Since the given atoms lithium, beryllium, boron, carbon and nitrogen are all second period elements. And the value of their electronegativity are as follows.

Lithium : 0.98

Beryllium : 1.57

Boron : 2.04

Carbon : 2.55

Nitrogen : 3.04

Thus, we can conclude that lithium has the least electronegativity.

for points guys

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.

that's it!

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