The pair of elements that forms the LEAST polar bond is
Na and Cl
S and Cl
N and Cl
Si and Cl
The answer is B, can anyone explain why? Thanks.
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I thought it would be A seeing how NaCl form an ionic bond...
Wait the choices run a,c,b,d.
Which one is b?
N and Cl.
Sorry, the answer choices are messed up.
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Na + Cl is going to be VERY polar since the electron will become essentially part of the C.
S + Cl will share the electrons slightly unevenly as Cl "wants" the electron more than S.
Since N + Cl have different numbers of electrons to acquire, the electrons will gravitate more towards Cl since it is more massive in size comparison and needs only one electron (thus the Z effect or effect of the nucleus will become stronger and pull the electrons closer to Cl).