If you know the location of an element on the Periodic Table of the elements, you know how many shells it has and how many... 1. Valence Electrons

2. Mass number

3. Neutrons

4. Atomic Mass

How hot is the suns corona? (integrated science)

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope