Question

"In which atom does the outermost electron experience the greatest effective nuclear charge?

a Li,
b K,
c Ne,
d Na,
e B"

Answer 1

The outermost electron experiences the greatest effective nuclear charge in sodium (Na).

Step-by-step explanation:

The atom in which the outermost electron experiences the greatest effective nuclear charge is d) Na, which is sodium. Sodium has 11 protons in its nucleus, giving it a positive charge of +11. The outermost electron in sodium is in the 3s orbital, and it experiences a strong attractive force from the nucleus due to the high nuclear charge. This results in the outermost electron feeling the greatest effective nuclear charge in sodium.