wiz-icon
MyQuestionIcon
MyQuestionIcon
5
You visited us 5 times! Enjoying our articles? Unlock Full Access!
Question

Consider the following statements
I. The radii of an anion is larger than that of the parent atom.
II. The ionization energy generally increases with increasing atomic number in a period.
III. The electronegativity of an element is the tendency of an isolated atom to repel an electron.
Which of the above statements is/are correct?

A
I alone
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
II alone
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
I and II
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
II and III
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C I and II
I. The radii of an anion is larger than that of the parent atom.As the parent atom is neutral and have same number of protons and neutrons. Whereas in case of its anion, the electrons are more in number than the number of protons, so effective nuclear charge of anion, is less than that of the parent atom, hence due to lesser effective nuclear charge of the anion than that of the parent chain the size of the anion is larger than that of the parent atom.
II. The ionization energy generally increases with increasing atomic number in a period.
As left to right the size decreases due to increase in the atomic number (means protons) , leading to increase in effective nuclear charge hence the size decreases so the ease of releasing the electrons becomes lesser, so the ionisation energy to remove the electrons increases left to right in the same period.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Periodic Trends
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon