Which element has the greatest number of valence electrons available for bonding? selenium boron calcium chlorine

Answer : The correct option is, Chlorine

Explanation :

The given elements are, Se, B, Ca, Cl

Atomic number = 34

Group number = 16

General Electronic configuration of the group number 16 elements is, .

The general configuration shows the number of valence electrons are present in the element.

The number of valence electrons present = 2 + 4 = 6

Atomic number = 5

Group number = 13

General Electronic configuration of the group number 13 elements is, .

The number of valence electrons present = 2 + 1 = 3

Atomic number = 20

Group number = 2

General Electronic configuration of the group number 2 elements is, .

The number of valence electrons present = 2

Atomic number = 17

Group number = 17

General Electronic configuration of the group number 17 elements is, .

The number of valence electrons present = 2 + 5 = 7

From this we conclude that the chlorine is the element which has the greatest number of valence electrons available for bonding.

Hence, the correct option is, Chlorine.

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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