Which list of elements from group 2 on the periodic table is arranged in order of increasing atomic radius?
(1) be, mg, ca (3) ba, ra, sr
(2) ca, mg, be (4) sr, ra, ba

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat