Question Detail

CHM 102 P block elements Objective Question
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Question

How do the electronegativity (EN) trends typically behave down a P-block group, especially in relation to the 1st, 2nd, and 3rd-row elements?
Options
A EN consistently decreases down the group.
B The 1st row element has low EN, while the 2nd and 3rd rows have progressively higher EN.
C The 1st row element has high EN, 2nd row is much less, and the 3rd row has higher EN (middle row anomaly).
Correct Answer
D EN increases for the first two elements and then decreases gradually.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 7 describes the typical properties: 'Anomalous 1st row element – small size; high EN', '2nd row element much less EN than 1st row', and '3rd row element has higher EN (middle row anomaly)'.

Hint

Recall the unique characteristics of the first element in a group and how size and shielding affect electronegativity in subsequent periods, especially after the transition metals.

Question Info

Course: CHM 102
Topic: P block elements
Type: Objective
Difficulty: Not specified
Question 1914 of 1999
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