Which of the following groupings represents a collection of isoelectronic species?(a) Ca2+, Cs+, Br (b) Na+, Ca2+, Mg2+ (c) N3–, F–, Na+ (d) Be, Al3+, Cl–
Which of the following groupings represents a collection of isoelectronic species?(a) Ca2+, Cs+, Br (b) Na+, Ca2+, Mg2+ (c) N3–, F–, Na+ (d) Be, Al3+, Cl–