dolabbiedjennel dolabbiedjennel

20-01-2016
Chemistry

Answered

Which of the following will not have the same number of valence electrons?

carbon

silicon

lead

bismuth

Verified Answer :

IlaMends IlaMends

26-10-2018

Answer: The correct answer is bismuth.

Solution:

Bismuth is the member of group 15 of the periodic table.

Bismuth contains five valence electrons in its valence shell. Which can be seen from its electronic configuration:

\([Bi]=[Xe]4f^{14}5d^{10}6s^{2}6p^{3}\)

Where as other three elements are the members of group 14 of the periodic table with three valence electrons in their respective valence shells.

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