Question

Which molecule contains the fewest number of atoms? (2 points)

a. SmCl3

b. RbNO3

c. H2SeO3

d. SiH4

Answer 1

the answer is SmCl3 I got that answer from how many years I been studying

Answer 2

Answer: The correct option is, (a)
`SmCl_3`

Step-by-step explanation:

(a)
`SmCl_3`

In this molecule, there are one number of samarium atom and three number of chlorine atoms. Hence, the total number of atoms present in
`SmCl_3` are, four.

(b)
`RbNO_3`

In this molecule, there are one number of rubidium atom, one number of nitrogen atom and three number of oxygen atoms. Hence, the total number of atoms present in
`RbNO_3` are, five.

(c)
`H_2SeO_3`

In this molecule, there are one number of selenium atom, two number of hydrogen atoms and three number of oxygen atoms. Hence, the total number of atoms present in
`H_2SeO_3` are, six.

(d)
`SiH_4`

In this molecule, there are one number of silicon atom and four number of hydrogen atoms. Hence, the total number of atoms present in
`SiH_4` are, five.

From the above we conclude that,
`SmCl_3` molecule contains the fewest number of atoms that is four than the other molecules.

Hence, the correct option is, (a)
`SmCl_3`