Largest atomic size Smallest atomic size

Arrange the following species in order of decreasing atomic size from top to bottom

Ar
Br-
Se2-
Kr
Sr2+

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3no2(g)+h2o(l)→2hno3(l)+no(g) part a suppose that 4.2 mol no2 and 0.50 mol h2o combine and react completely. which reactant is in excess? express your answer as a chemical formula. nothing

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Which activity is an innate behavior