Which of the following is a diatomic molecule?
A. Ca2-
B. N2
C. KCl
D. MgCl2

Question

Which of the following is a diatomic molecule?
	A.	Ca2-
	B.	N2
	C.	KCl
	D.	MgCl2

jfraser · Answer

what does the word di-atomic mean?

anonymous · Answer

it means consisting of two atoms.

jfraser · Answer

not just 2 atoms, but 2 of the same atom in a molecule. only one of those choices fits that description

anonymous · Answer

so it would be A?

anonymous · Answer

@JFraser

jfraser · Answer

it's not A

anonymous · Answer

ok

anonymous · Answer

would it be B?

anonymous · Answer

@KeboNerd can you help me?

jfraser · Answer

stop guessing. only one of the options is made of 2 identical atoms.

anonymous · Answer

im not trying to guess. I dont know what any of these element things mean. I need help understanding really bad.

jfraser · Answer

each element gets a unique symbol. only one of the options is made up of 2 identical atoms

anonymous · Answer

well on D its Mg and Cl, witch is magnesium and chlorine. thats 2 different elements. so it must be C. But K is potassium and Cl is chlorine. So im confused.

jfraser · Answer

i never said B was wrong, i just said stop guessing and look at each of the options

anonymous · Answer

oh. I was and i wasn't trying to guess. (i hate guessing) But am i on the right track with my last comment?

jfraser · Answer

both C and D have more than 1 kind of atom, so it's B

anonymous · Answer

ok thanks!