An element with Z = 34  belongs to ………block…..group and …..period of modern periodic table

detailed solution

Correct option is B

Hints to predict the position of element in the Modern periodic table :1)Elements from Z = 58-71……Lanthanoids…..4f series….6th period……3rd(IIIB) group;2)Elements from Z = 90-103……Actinoids…..5f series….7th period……3rd(IIIB) group;3)Elements from Z = 104-118………..Last two digits gives group number….. 7th period;4)Elements from Z = 31-57….subtract 18 to get preceding element;5)Elements from Z = 72-89….subtract 32 to get preceding element;6)Elements from Z = 104-120….subtract 32 to get preceding element ;For Z=104-120….simplest Hint7)Elements from Z = 104-120….subtract 82 to get a lower member(Z<30) belonging to same group;Hints 4, 5 and 6 can be used repeatedly until an element belonging to same group with Z < 30 is obtained;Elements with Z < 30 with their group, period and block can be known from Electronic configuration;Ex : Z=116, 84, 52, 34, 16, 8….belong to 16th(VIA) group;(116-32)=84; (84-32)=52; (52-18)=34; (34-18)=16;Z = 16…….S……3s23p4…..n=3….3rd period……p-block….valence electrons(6)….16th group;Z = 34…….Se…..4s24p4…..n=4….4th period……p-block….valence electrons(6)….16th group;Z = 52…….Te…..5s25p4…..n=5….5th period……p-block….valence electrons(6)….16th group;Z = 84…….Po….6s26p4…..n=6….6th period……p-block….valence electrons(6)….16th group;Z = 116……Lv….7s27p4…..n=7….7th period……p-block….valence electrons(6)….16th group;