, What quantity of gas, in moles, is contained in 8.2 L at STP? (Answer in 3 digits)

The number at the end of an isotope’s name is the number.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

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