Question : Which of the following pairs of "elements - valency" is correct?
I. Boron - 2
II. Fluorine - 3
Option 1: Neither I nor II
Option 2: Both I and II
Option 3: Only II
Option 4: Only I
New: SSC CHSL tier 1 answer key 2024 out | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: Neither I nor II
Solution : The correct answer is Neither I nor II .
Although it might seem like Boron could have a valency of 2 because it has three valence electrons, it tends to form compounds by sharing those 3 electrons, achieving a stable octet for each atom. Therefore, its valency is 3, not 2. Fluorine has only seven electrons and needs just one more electron to achieve a stable octet. Thus, its valency is 1, not 3.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates BrochureYour Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.