Groups / Families Which elements are these upper left – magnesium
{"Image DocumentName": "Groups / Families Which elements are these? upper left \u2013 magnesium", "Image ImageDescription": "lower right - calcium. What do they have in common? The same number of electrons in their outer orbit.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}