A map of North America with points labeled A and B. A: Center of Canada. B: In the ocean, South of Alaska.

Use the drop-down menu to identify which type of air mass would form at each point on the map.

Point A :

Point B:

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false