PLEASE HEL ASAP Which statement correctly compares an atom of an alkali metal with an atom of the alkaline earth metal next to it on the periodic table?
A. The alkali metal atom forms a +1 ion, while the alkaline earth metal atom forms a +2 ion.
B. The alkali metal atom forms a +2 ion, while the alkaline earth metal atom forms a +1 ion.
C. The alkali metal atom has one less shell of electrons than the atom of the alkaline earth metal.
D. The alkali metal atom has one more shell of electrons than the atom of the alkaline earth metal.

1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Find the mass, in grams, of 5.00*10^23 molecules of f2