Which of these elements has the greatest atomic number? A.
tin (Sn)

B.
lead (Pb)

C.
boron (B)

D.
sulfur (S)

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

How can one make a supersaturated solution? (apex)