Addition of a second electron to a uninegative ion is always:
Correct answer: B. Endothermic
- A. Exothermic
- B. Endothermic
- C. Data is insufficient
- D. Unpredictable
Explanation
Adding a second electron to a negatively charged ion (already possessing an excess of electrons) requires overcoming repulsion between the existing electron and the incoming electron. This process consumes energy,making it an endothermic reaction.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
Which order of ionization energy is correct?
The property which increases upto group IV-A then decreases onwards
An element has electronic configuration 1s²2s²2p³ It belongs to
Less electronegative elements such as Be, Ga, Al etc. form:
True increasing order of acidity of the oxides of Mn is:
What is the number of elements in the 6th period of the periodic table?