Question

Which of the following is an example of an element:

A) H₃O
B) He
C) Ca₂CO₃
D) CaCl₂
PLEASE ANSWER QUICKLY

Answer 1

He (Helium)

Step-by-step explanation:

its second element in periodic table.

it has two electrons in outer shell.

Answer 2

He(HELIUM)

Step-by-step explanation:

He (Helium) is an element as it is pure and cannot be broken into simpler substances.

Hope this helped!

~AH1807