The electronegativity of gallium (1.8) is greater than that of aluminum (1.6). Which is the best exp — Atomic Structure Chemistry Question
Question
The electronegativity of gallium (1.8) is greater than that of aluminum (1.6). Which is the best explanation for this difference?
A.
Ga is larger than Al, so its valence electrons experience less electron-electron repulsion.
B.
Ga has more protons than Al, so its valence electrons are more attracted to the nucleus.
C.✓ Correct
Ga has a filled 3d subshell, whose electrons incompletely screen the nucleus.
D.
Ga experiences significant relativistic effects, which contract the valence orbitals.
💬
Still have doubts about this question?
Practice more questions like this, completely free.