Complete:
(a)Na−...........→Na+(b)N +...........→N3−(c)Cl+e−→...........(d)Mg −...........→Mg2+(e)M+HCl→MCl2+...........(f)Mg+H2SO4→...........+...........
Question 20
In which of the following pairs, the ions are isoelectronic ?
(a) Na+,Mg2+ (b) Al3+,O− (c) Na+,O2− (d) N3−,Cl−
Question 17 Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al (a) Cl > Si >Al > Mg >Na (b) Na >Mg >Al >Si > Cl (c) Na > Al > Mg > Cl > Si (d) Al > Na> Si > Ca> Mg