Question

ঙ) কোন যৌগটি গঠনের ক্ষেত্রে অষ্টক নীতি মান্য হয় না - NaCI/KCI/LiH/CaO
চ) একটি সমযােজী ত্রি বন্ধন যৌগ হল - HO/CHA/CCla/CH,।​

Answer 1

Explanation:

question ko neatly type karo

Answer 2

i) option (c) LiH does not follow the octet rule.

According to the octet rule, "an electron should have eight electrons in its outermost shell."

But, a few elements from the p block like hydrogen, lithium, and helium do not follow the octet rule.

• They can only lose or gain one electron  and have 2 electrons in the outermost shell to become stable due to which they do not obey the octet rule.
• As Li has an electron configuration $1s^2 2s^1$. So it needs 1 more electron in 2s to become stable.
• Hydrogen (H) has an electron configuration $1s^1$. So, it needs 1 more electron in 1s to become stable.
• So, basically they follow the duet rule (have two electrons in its outermost shell.) instead of the octet rule to become stable.