Which of the following would cause a decrease in the volume of a sealed balloon filled with helium? Adding oxygen gas Decreasing temperature Adding more helium Decreasing pressure

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

maybe the spark is gone, love is a weird emotion and there is a possibility he may have found somebody else.

the answer is c. nacl

a is the correct answer