How many protons, electrons, and neutrons, respectively, does 89sr^2+ have?
a.36, 38, 51
b. 38, 38, 51
c. 38, 36, 51
d. 38, 36, 89
d. 36, 38, 53
the following elements exist as diatomic molecules under standard condition:
chlorine
a. oxygen
b. nitrogen
c. boron
d. carbon
e. bromine