A Solution is a mixture of two or more substances O a in water
O b. seperate from one another
O c in the same phase
Od come to room temperature

In the same phase

Explanation:

Because when you make a solution you have to keep them in the same phase or you will oof.

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

c.

explanation: