Question

Arrange the following in order of increasing ionic radius? 1.Ca2+,P3+,Cl-.

Answer 1

`Cl^(-), P^(3+), Ca^(2+)`

Explanation:

Ionic radius increases from top to bottom and decreases from left to right of the periodic table. Since calcium, phosphorus, and chlorine are all in period 2, the order of increasing ionic radius is `Cl^(-), P^(3+), Ca^(2+)`

The radii, by the way, are:
`Ca^(2+)`: 231pm
`P^(3+)`: 195pm
`Cl^(-)`: 175pm

(Source: a quick google search:
https://www.google.com/search?q=ionic+radius+of+ca&rlz=1CADEAC_enUS757US758&oq=ionic+radius+of+ca&aqs=chrome..69i57j69i60j0l4.3962j0j7&sourceid=chrome&ie=UTF-8&safe=active&ssui=on)