Home Chemistry Classification of Elements and Periodicity Skill Builder Which of the following statements is/are inc…
Chemistry Classification of Elements and Periodicity Skill Builder Single Correct MCQ
Published on: August 13, 2026

Which of the following statements is/are incorrect?

A
Helium has the highest first ionisation enthalpy in the periodic table.
B
Nitrogen has more electron affinity than that of phosphorus
C
Mercury and bromine are liquids at room temperature.
D
In any period, atomic radius of alkali metal is the highest

Share this question

WhatsApp

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
B

Nitrogen is smaller in size and therefore has higher electron density than phosphorous, so

there are additional repulsions to the incoming electron. Hence, electron affinity of nitrogen is less than that of phosphorus.

Previous Question Next Question

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

In period of periodic table, how many elements have one or more 4d electrons?
Few reactions are given below- A. B. C. D. Which of the following statement(s) is/are correc…
Which of the following is/are incorrect?
Energy required for the ionisation of 0.02 gram atom of magnesium is . The amount of energy requir…
Out of and , which of these species will have the maximum and minimum I.E respectively:
The species and contain the same number of electrons. In which order do their radii increase?
CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.