Question

# Which of the following molecular species/compound is not hypovalent?

A
CH+3
B
B2H6
C
NH+2
D
AlF3

Solution

## The correct option is D $$AlF_3$$Those species which have the central atom with less than eight electrons in the outermost shell or valence shell are considered as hypovalent species.Electronic configuration of :Al - 2,8,3We can see in the figure,In $$AlF_3$$, central element (Al) is in Al(+3) state. So its configuration isAl(+3) - 2,8Since there are 8 electrons remaining in the valence shell of the central atom in $$AlF_3$$. So, $$AlF_3$$ is not “Hypervalent”.'Chemistry

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