Do elements in the same row across belong to the same period or group?

Answer 1

The same period.

Periods run horizontally, left and right. Groups run vertically, up and down.

Groups are also called families because the groups share some characteristics. As an example, all the elements of Group 1 tend to lose one electron when they react with some other element.

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Answer 2

same time frame.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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