How would the size of the Cl atom compare to the size of Cl1-?
Understand the Problem
The question is asking about the comparison of atomic sizes between a chlorine atom and its anion form (Cl1-). It implies a discussion about how the addition of an electron affects atomic size, typically resulting in a larger ion compared to the neutral atom.
Answer
The size of the Cl1- ion is larger than the size of the Cl atom.
The size of the Cl1- ion is larger than the size of the Cl atom.
Answer for screen readers
The size of the Cl1- ion is larger than the size of the Cl atom.
More Information
When the chlorine atom gains an electron to become Cl1-, there is additional electron-electron repulsion due to the extra electron. This leads to an increase in the size of the ion compared to the neutral atom, as the effective nuclear charge felt by the electrons decreases.
Tips
A common mistake is to assume increased nuclear charge when an atom gains an electron. Instead, electron repulsion increases and the effective nuclear charge per electron decreases.
Sources
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