Brainliest for first answer
People living in the Gupta era made major accomplishments in all of the following areas except .
A.
literature
B.
government
C.
mathematics
D.
craftsmanship

D

Explanation:

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n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above