Question: Which of the following elements has the largest ionic radius?
Options:
Na+
Mg2+
Al3+
K+
Correct Answer: K+
Solution:
K+ has the largest ionic radius among the given options.
Which of the following elements has the largest ionic radius?
Practice Questions
Q1
Which of the following elements has the largest ionic radius?
Na+
Mg2+
Al3+
K+
Questions & Step-by-Step Solutions
Which of the following elements has the largest ionic radius?
Correct Answer: K+
Step 1: Understand what ionic radius means. Ionic radius is the size of an ion in a crystal lattice.
Step 2: Identify the elements given in the question. (Assuming K+ is one of them.)
Step 3: Recognize that cations (positively charged ions) are usually smaller than their neutral atoms because they lose electrons.
Step 4: Compare the ionic radii of the given elements. K+ is a cation formed from potassium (K).
Step 5: Remember that larger atomic numbers generally mean larger ionic radii for cations, but K+ is special because it has lost an electron.
Step 6: Conclude that K+ has the largest ionic radius compared to other cations because it is less positive than others and has fewer protons pulling on the remaining electrons.
No concepts available.
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