What are two likely reasons a cl ion cannot pass through a sodium ion channel?

The answers are;

1.Cl- is bigger an size atom compared to K+.  Therefore, Cl does not fit in the active site of the of the ion channel transmembrane protein.

2.Cl- is an anion while K+ is a cation. Cl- therefore does not interact positively with the charges in the channel of the transmembrane protein

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explanation:

answer; the above answer to the above statement is (true)