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Irina-Kira [14]
3 years ago
9

Diffrence btwn a period and a group

Chemistry
1 answer:
Tpy6a [65]3 years ago
8 0
Rows of elements are called periods. The period number<span> of an element signifies the highest unexcited energy level for an electron in that element.

</span>Columns of elements help define element groups<span>. </span>Elements within a group share<span> several common properties. Groups are elements have the same outer electron arrangement.</span>
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