(a)3 (b) 5 (d) 2 tc)4 an element, m has an atomic mass 19 and atomie number 9. 1ts stable 1on is represented by (a) m the electronic configuration of four clene

(a)3 (b) 5 (d) 2 tc)4 An element, M has an atomic mass 19 and atomie number 9. 1ts stable 1on is represented by (a) M The electronic configuration of four clenents are (b M fo M (d) M TUKI5