Question Detail

CHM 102 Group II Objective Question

Question

What is a primary reason for beryllium's anomalous behavior compared to other Group II metals?
Options
A Its electrons are poorly shielded from its nucleus.
Correct Answer
B It has the largest ionic radius in the group.
C It is a good reducing agent.
D Its compounds are more ionic than covalent.
Correct Answer

Option A is the correct answer.

Detailed Explanation

Page 4 explains that beryllium is an exception because 'Its electrons are not well shielded from its nucleus.' This leads to a small ionic radius and high polarizing power.

Hint

Think about the electronic structure and size of beryllium's ion.

Question Info