Determine the mass of magnesium in a beaker if the mass of the beaker is 1.80 g and the mass of the magnesium and beaker is 2.85 g to two decimal places.

What are the first three quantum numbers for the electrons located in subshell 2s?

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided