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romanna [79]
3 years ago
8

A. On the Periodic Table of Elements, columns are called ______________________; all of these

Chemistry
2 answers:
Anestetic [448]3 years ago
7 0
1. Groups
2. They have the same number of electrons in their outer shell
3. Periods
4. They have the same number of shells
Vesnalui [34]3 years ago
4 0

Answer:

A. On the peridic table of elemets, columns are called groups; all of these elements have the same number of electrons in the outer orbital.

B. On the periodic table of elements, rows are called periods; all of these have the same number of atomic orbitals.

<em>I think this is right sorry if i'm wrong!</em>

<em></em>

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