Helpp plss! As you move from left to right across a period, what happens to the atomic radii? They increase, because of the higher number of occupied energy levels.
They increase, because of the weaker attraction of electrons to the nucleus.
They decrease, because of the stronger effective nuclear charge.
They decrease, because of the increased atomic mass.

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Calculate the number of grams of sodium in 3.00 g of each sodium-containing food additive.