Question

anyone tell me the soln of it
with little bit concept​

Answer 1

Answer: 4

Explanation:

the correct answer is option 4

Answer 2

• Iodine is larger than Bromine, so its anion is also larger than bromide ion.
• Also, we should know that Fluoride ion is the smallest anion in the periodic table'
• Since, Selenium is quite bigger than oxygen, so does its anion.

Therefore, the net order we get is as follows

Iodide > Selenide> Bromide > Oxide > Fluoride

So, (d) is the correct option.