Pls help I'm failing, GIVING POINTS. follow, stars and hearts!

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

How are the terms group and period used on the periodic table