Question

The ionic radii of S-2 and Te-2 are 1.84 and
2.21 Å respectively. The ionic radii of Se-2 is
(1) 1.83 Å
(2) 2.22 A
(3) 4.5
(4) 2.02 Å​

Answer 1

ye saare elements ek hi group se belong krte hai....iska mtlb,Jo sbse neeche hoga ya,jiska atomic no. sbse jyada hoga uska size bda hoga....

to ismein neeche group mein tellurium hai...kyuki uska atomic no. 52 hai aur uske upr selenium hai aur sbse upr sulphur hai

hum jante hai ,ki size decreases down the group..

so size of tellurium will be largest and that of sulphur ,is small ,and selenium is between them so

1.84<size of selenium ion>2.21

aisa condition follow krne Wala option 4 hai

so , answer is option 4)

hope it helps you komal

Answer 2

kajal sab khairiyat ?? kya hua yrr sab kuch thik hai na ?? batao plz kya hua tha kyu itne mahino se baat ni karrahe bhulgaye kya hame ...bataona .. mijhe apse baat karni hai ... mann karraha hai aur zaroori baat bhi karni hai .. try to understand