Using the Rows As a rule the first element in a period is usually an active solid. the last element in a period is always a noble gas.
{"Image DocumentName": "Using the Rows As a rule the first element in a period is usually an active solid. the last element in a period is always a noble gas.", "Image ImageDescription": "atomic mass generally increases form left to right. there are exceptions. The left side of a period is usually an active solid, meaning it is ready to give away one its electrons. The last element on the right side of a period are called the noble gases. They don\u2019t want to gain or lose electrons. They or happy with the 8 in their outer shell. Also, the atomic size decreases from left to right across the row, but the mass increases across a period.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}