CHEM 1307 Fall 2017 Midterm Exam #3MULTIPLE CHOICE. Select the one choice that best completes the statement or answers the question.1) Which pair of species is isoelectronic?A) Ne and Na+B) Ca2+and KrC) Be2+and Mg2+D) O2-and S2-E) H+and He
2) Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in theground state of potassium, K.
½3)Select the gas with the largest root-mean-square molecular speed at 25°C
4) Which of the following equations describes the process associated with electron affinity?
5) Which of the following elements has the largestatomic radius?A) BB) AlC) OD) ClE) S