HELP ME Calculate the mass of sodium azide required to decompose and produce 1.19 moles of nitrogen. Refer to the periodic table to get the atomic weights.

just doing this for points sorry

Explanation:

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.