Trends in the periodic table indicate that the element with the greatest ionization energy is in which of the following periods and groups? a
Period 2, Group 1
b
Period 7, Group 2
c
Period 6, Group 17
d
Period 1, Group 18

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .