Can you help me please? I have a quiz tomorrow..

enter image source here

Redirected from "Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element"
1 Answer
Sep 10, 2017

b and c are vectors because they are specified by directions east and north respectively.

The others a, d and e which are specified only by magnitude (such as (a) which is 5m which specifies a definite length only without associating any direction) and hence are scalars.