Multiple choice question

iz'u&37 fdlh rRo dk ijek.kq Øekad 27 gS rFkk blds ukfHkd esa 14 U;wVªkWu mifLFkr
gSa] rc blds ckgjh d{kksa esa bySDVªkuksa dh dqy la[;k gksxhA
(a) 14 (b) 27 (c) 13 (27–14) (d) 41
Atomic number of an atom is 27, it contains 14 neutrons in its nucleus, then
total number of electrons present in its orbits will be?
(a) 14 (b) 27 (c) 13 (27–14) (d) 41
iz'u&38 ;fn fdlh ijek.kq dh ijek.kq lajpuk 2] 8] 8] 3 gS rks lkekU; n'kkvksa esa ;g
la;kstdrk n'kkZ,xkA
(a) +2 (b) –2 (c) +3 (d) –3
If an atom has electronic configuration 2, 8, 8, 3 then generally it will show
the valency–
(a) +2 (b) –2 (c) +3 (d) –3
iz'u&39 ;fn fdlh ijek.kq dk bySDVªkWfud foU;kl 2] 8] 6 gks rks og la;kstdrk
n'kkZ,xkA
(a) –6 (b) +2 (c) +6 (d) –2
If the electronic configuration of an atom is 2, 8, 6 then it will represent the
valency–
(a) –6 (b) +2 (c) +6 (d) –2
iz'u&40 ;fn fdlh rRo dk bySDVªkWfud foU;kl gS& Cu 29 = 1s 2 , 2s 2 p 6 , 3s 2 p 6 , d 10 , 4s 1
bl rRo }kjk n'kkbZ tkus okyh la;kstdrk gksaxhA
(a) +1 (b) –1 (c) +1 +2 (d) buesa ls dksbZ ugha
The Cu 29 = 1s 2 , 2s 2 p 6 , 3s 2 p 6 , d 10 , 4s 1 electronic configuration will show the
valency–
(a) +1 (b) –1 (c) +1 +2 (d) None of these
13