What mass of water (in grams) is necessary to convert 225g SiF4 to SiO2?SiF4 + 2H2O —> 4HF + SiO2

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

28528289 29823282 8298232 39858

i think its 100

i hope this !