Question

6 Name 8 The number of unpaired electrons in the ground state d electron eonfiguration decreases in the following order a) PP<P b) d> d> d do>d> d d> d> do d> d> d c) d) е) 9, From the following groups, the largest atom will be, (K, Li, Cs), (Pb, Sn, Si), (F, O, N) a) K, Sn, F K, Sn, O b) Cs, Pb, F+ c) d) Li, Si, N Cs, Pb, N 10. The first ionization energy for aluminum (Al) is 578 kJ while that for magnesium (Mg) is 738 kJ. This tells us that: more energy is required to remove an electron from Mg than for Al more energy is released in removing an electron from Mg than for Al more energy is required when Mg accepts an electron than for Al not possible to answer unless the electron affinity is known a) b) c) d) more energy is released when Mg accepts an electron than for Al e) What is the electron configuration of Fe2 ? 11. a) [Ar]4s'3d b) [Ar]3d c) [Ar]4s 3d d) [Ar]3s 3d e) [Ar]3d

Answer 1

8 option (d, de> d > do KILALALALA LALALALALA do 4 - Unpaired es 1. Unpaired ē No unpaired es a option (e) Cs, Pb, N In a periodic table, the atomic down the group .Cenk > Li while as the atomic size period from left to right in size Increases and Pb> Sn> Sie decreases in a N > O F + NAE reme 10 (as more electron from energy Mgr is than required for Al. to I 11 cbs [Ar]3d6 During the ionization of Fe to fet, 4s electrons. neill be removed first. "