Answer:
Explanation:
Nitrogen has a lone pair of electrons. That would mean that NH3 is minus at the left end in this case.
H
:N H
H
Methane has its Hs 90 degrees (approximately apart.
H
H C H
H
The pulling forces on the methane cancel each other out. When that happens the chemical is non polar.

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- ( I would appreciate if you gave brainliest if I helped you, if not please let me know what I got wrong! If you need any more help do not hesitate to ask! :) )
Elements present in group 18 are known as noble gases. The outermost shell of these elements are completely filled.
18 is the answer
I would say A because it’s the only one that doesn’t conduct electricity. Ionic compounds conduct electricity, and covalent compounds do not.
I think the answer is codominant??