If you start with 4.0 grams of sodium flouride (naf), how many grams of magnesium flouride (mgf2) will be produced? the molar mass of naf is 42g/mole and the molar mass of mgf2 is 62g/mole.

answer; i do believe the correct answer is (river); /// good luck

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

i don't know people like to fight everywhere rip.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a