Question

In CF4 and NF3, the ___electron groups on the central C and N atoms have a ___ arrangement. The shapes of the molecules are determined by the number of ___ of electrons: since CF4 has ___ bonded atom(s) and ___ lone pair(s) of electrons, the shape is ___. Since NF3 has ___ bonded atom(s) and ___ lone pair(s) of electrons, the shape is ___.

Answer 1

Answer:

four

Tetrahedral

Pair

four

zero

tetrahedral

three

one

Trigonal Pyramidal

Explanation:

In CF4 and NF3, the four electron groups on the central C and N atoms have a Tetrahedral arrangement. The shapes of the molecules are determined by the number of pair of electrons: since CF4 has four bonded atom(s) and zero lone pair(s) of electrons, the shape is tetrahedral. Since NF3 has three bonded atom(s) and one lone pair(s) of electrons, the shape is trigonal pyramidal.

What we were told to do is to fill in the gaps whose answers have been provided.

Answer 2

Answer:

Explanation:

In CF4 and NF3, the valence electron groups on the central C and N atoms have a tetrahedral arrangement. The shapes of the molecules are determined by the number of bonding and nonbonding of electrons: since CF4 has four bonded atom(s) and zero lone pair(s) of electrons, the shape is tetrahedral.