What is the period and group of this atom?

Answer 1

2nd period and halogen group

Determine this atom's element first.

We look at the periodic table for the element with an atomic number of 9, fluorine (F), since it has nine protons, and the number of protons equals the atomic number.

Second, a group or family in the periodic table refers to its column; the halogens are the name given to the seventh column. A period in the periodic table denotes its row, and fluorine is in the second period.

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Answer 2

Jose Ayala

Could you please specify which element you are referring to so that I can provide you with accurate information?

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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.