A molecule or ion with five electrons in bonding orbitals and two electrons in an antibonding orbital has a bond order of ________.
A) 0.5
B) 1
C) 1.5
D) 2
E) 3

Name: A molecule or ion with five electrons in bonding orbitals and two electrons in an antibonding orbital has a bond order of ________. A) 0.5 B) 1 C) 1.5 D) 2 E) 3
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Question

Quizplus · Accepted Answer

Bond order is calculated as (number of bonding electrons - number of antibonding electrons)/2. 
In this case, (5-2)/2=1.5. Therefore, the answer is choice C.

A Molecule or Ion with Five Electrons in Bonding Orbitals