Which of the following gives the correct numbers of protons,neutrons,and electrons in a neutral atom of Sn?
A)118 protons,50 neutrons,118 electrons
B)118 protons,118 neutrons,50 electrons
C)50 protons,68 neutrons,50 electrons
D)68 protons,68 neutrons,50 electrons
E)50 protons,50 neutrons,50 electrons

Question

Which of the following gives the correct numbers of protons,neutrons,and electrons in a neutral atom of  Sn?
A)118 protons,50 neutrons,118 electrons 
B)118 protons,118 neutrons,50 electrons 
C)50 protons,68 neutrons,50 electrons 
D)68 protons,68 neutrons,50 electrons 
E)50 protons,50 neutrons,50 electrons

Quizplus · Accepted Answer

The element symbol Sn represents tin, which has an atomic number of 50, meaning it has 50 protons and in a neutral atom, it also has 50 electrons. The atomic mass of Sn is 119, meaning it has 119 nucleons (protons + neutrons). Subtracting the atomic number from the atomic mass gives the number of neutrons: 119 - 50 = 69. Therefore, a neutral atom of Sn has 50 protons, 69 neutrons, and 50 electrons. Choice C is the only option that matches this configuration.

Which of the Following Gives the Correct Numbers of Protons,neutrons,and