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

2 Answers

1 vote

Answer: The answer is D. Chlorine

Step-by-step explanation:

User Nyaarium
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Answer : The correct option is, Chlorine

Explanation :

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

  • Element is Selenium, Se

Atomic number = 34

Group number = 16

General Electronic configuration of the group number 16 elements is,
ns^2np^4.

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

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

  • Element is Boron, B

Atomic number = 5

Group number = 13

General Electronic configuration of the group number 13 elements is,
ns^2np^1.

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

  • Element is Calcium, Ca

Atomic number = 20

Group number = 2

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

The number of valence electrons present = 2

  • Element is Chlorine, Cl

Atomic number = 17

Group number = 17

General Electronic configuration of the group number 17 elements is,
ns^2np^5.

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.

User Zombian
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