Respuesta :
the answer is SmCl3 I got that answer from how many years I been studying
Answer: The correct option is, (a) [tex]SmCl_3[/tex]
Explanation:
(a) [tex]SmCl_3[/tex]
In this molecule, there are one number of samarium atom and three number of chlorine atoms. Hence, the total number of atoms present in [tex]SmCl_3[/tex] are, four.
(b) [tex]RbNO_3[/tex]
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 [tex]RbNO_3[/tex] are, five.
(c) [tex]H_2SeO_3[/tex]
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 [tex]H_2SeO_3[/tex] are, six.
(d) [tex]SiH_4[/tex]
In this molecule, there are one number of silicon atom and four number of hydrogen atoms. Hence, the total number of atoms present in [tex]SiH_4[/tex] are, five.
From the above we conclude that, [tex]SmCl_3[/tex] molecule contains the fewest number of atoms that is four than the other molecules.
Hence, the correct option is, (a) [tex]SmCl_3[/tex]