Recall your study of equilibria and kinetics from general chemistry. You used equations with upper case K and lower case k during the study of equilibria and kinetics respectively. What do the upper and lower case letters refer to?

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- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

distance, luminosity, brightness, radius, chemical composition, and temperature

confused

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