Question: Which of the following ions has the smallest ionic radius?
Options:
Na+
Mg2+
Al3+
Si4+
Correct Answer: Si4+
Solution:
Si4+ has the smallest ionic radius due to its high positive charge, which pulls the electrons closer.
Which of the following ions has the smallest ionic radius?
Practice Questions
Q1
Which of the following ions has the smallest ionic radius?
Na+
Mg2+
Al3+
Si4+
Questions & Step-by-Step Solutions
Which of the following ions has the smallest ionic radius?
Correct Answer: Si4+
Step 1: Understand what ionic radius means. Ionic radius is the size of an ion, which can be affected by its charge.
Step 2: Recognize that ions can be positively charged (cations) or negatively charged (anions). Cations are usually smaller than their neutral atoms because they lose electrons.
Step 3: Identify the ions in the question. In this case, we are comparing different ions, including Si4+.
Step 4: Note that Si4+ has a high positive charge (+4). This means it has lost four electrons.
Step 5: Understand that losing electrons causes the remaining electrons to be pulled closer to the nucleus, making the ion smaller.
Step 6: Compare Si4+ with other ions. Generally, the more positive the charge, the smaller the ionic radius.
Step 7: Conclude that Si4+ has the smallest ionic radius among the ions being compared.
No concepts available.
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