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Which of the following ions has the smallest radius?
Which of the following ions has the smallest radius?
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Practice Questions
1 question
Q1
Which of the following ions has the smallest radius?
Na+
Mg2+
Al3+
Si4+
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As the positive charge increases, the ionic radius decreases; Si4+ has the smallest radius.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following ions has the smallest radius?
Solution:
As the positive charge increases, the ionic radius decreases; Si4+ has the smallest radius.
Steps: 6
Show Steps
Step 1: Understand that ions are charged atoms. Positive ions (cations) have lost electrons.
Step 2: Know that when an atom loses electrons, it becomes smaller because there is less electron-electron repulsion.
Step 3: Recognize that the more positive charge an ion has, the smaller its radius will be.
Step 4: Compare the ions given in the question based on their positive charges.
Step 5: Identify that Si4+ has the highest positive charge (4+), meaning it has lost the most electrons.
Step 6: Conclude that Si4+ will have the smallest radius among the ions listed.
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