As group 1 elements are considered in order of dressing atomic radius 1) atomic number increases
2) ionization energy increases
3) number of valenece electrons increases
4) atomic mass increases

Iknow the answer is a but i don't know why

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.