Question

If the atomic weight of an element is $23$ times that of the lightest element and it has $11$ protons, then it contains

• A. $11$ protons, $23$ neutrons, $11$ electrons
• B. $11$ protons, $11$ neutrons, $11$ electrons
• C. $11$ protons, $12$ neutrons, $11$ electrons
• D. $11$ protons, $11$ neutrons, $23$ electrons

Answer 1

Answer: (C)

Mass no. $\approx$ At. Wt.
Mass no. = no. of protons + no. of neutrons
At. no. = no. of protons = no. of electrons