What is the solution set to the line #3x-y=7# from the set of (2,-1), (3, 2), (-1, 4), (1, -4)?
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"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
Jun 11, 2017
The first, yes
The second, yes
The third, no
The fourth, yes
