Which statement for nh3 and nf3 is false? electronegativities: n = 3.0, h = 2.1, f = 4.0.

The answer is The NF3 molecule is more polar than the NH3 molecule. (this is false).

Here you have the explanation of the answer.

This is the list of choices:

Both are sp3 hybridized at nitrogen. --- TRUE BECAUSE THE HYBRIDATION IS DETERMINED BY N AND IT HAS FOUR ELECTRON DOMAINS WHICH DRIVES TO SP3 JUST AS IN CARBON.

The bond angles in NF3 are smaller than those in NH3. --- TRUE BECAUSE THE BOND ANGLES ARE DETERMINED BY THE HYBRIDIZATION OF THE N.

The NF3 molecule is more polar than the NH3 molecule. FALSE BECAUSE THE MOLECULES ARE SYMETRIC AND THE DIPOLES ARE CANCELLED IN BOTH CASES.

Both molecules have one unshared pair of electrons in the outer shell of nitrogen. --- TRUE BECAUSE THE CONFIGURATION OF N LEADS TO ONE UNSHARED PAIR OF ELECTRONS

The bond dipoles of NF3 are directed toward fluorine, whereas those in NH3 are directed toward nitrogen.--- TRUE BECAUSE THE DIPOLES ARE DIRECTED TO THE MOST ELECTRONEGATIVE ELEMENT (F AND N).