Question

two elements A and B belong to the same period.what is common in them?

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Answer 1

HEY MATE!!

COZ THEY HAVE SAME NUMBER OF SHELL

HERE IS UR ANSWER

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Answer 2

They have same number of shells.

• In each period (horizontal row), the atomic numbers increase from left to right.
• The periods are numbered 1 through 7 on the left-hand side of the table.
• Elements that are in the same period have chemical properties that are not all that similar.