21. Find the correct comparison of Ionic Radius, IRetement, for either cations (

Question

21. Find the correct comparison of Ionic Radius, IRetement, for either cations (by losin Ratemuen.for either cations by electrons) or anions ( gaining electrons) from the following elements: (b) IRMKIRsIRs IRS d the pair of species with exactly the same no. of valence electrons, from all atoms in their formu (a) PO.HSO,32 (b) COSO, 24 () NO,/SO, ,26 ) PO /CIO,31 (e) So/co 23. Find the correct group of electronegativity va lues by trend for elements Fr, F, Be, Br and C, respective (a) 4.0, 0.7,2.5, 1.5,2.8 (d) 0.7, 1.5, 2.5, 2.8, 4.0 (b) 0.7,4.0, 1.5, 2.5, 2.8 (e) 4.0, 2.8, 2.5, 1.5, 0.7 (c) 0.7, 4.0, 1.5, 2.8, 2.5 24. Electronegativity value of elements increases from the to theon the Periodic Table. (a) top, bottom (b) nonmetal, metalleft, right (d) noble gas, metal (e) right, l

Explanation / Answer

21. Ionic radius is different from atomic radius. The radius of cations are less than anions.

> as the +ve charge will increase on cation the ionic radius will decrease.

>as the -ve charge will increase on anions the ionic radius will increase.

In our case O-2>Si+4<Sr+2 is right order.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.