Which of the following is true for balancing equations? the number of products should be equal to the number of reactants. the properties of products should be the same as the properties of reactants. there must be as equal number of compounds on both sides of the equation. there must be as equal number of atoms of each element on both sides of the equation.

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

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.