If you were to go into your kitchen and chop up lettuce, onions, red peppers and carrots for a salad what combinations would you be making? a. chemical compound
b. molecular elements
c. homogeneous mixture
d. hetergeneous mixture

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

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answer: c.

explanation:

the answer is d.) potassium