Question

1. For the following: Al, Ca, Sc, Cr, and Zn
   1. Write the electron configuration (condensed or noble gas).

b. Indicate how many unpaired electrons each atom has

2.Write the orbital diagram for the electron configuration of ground state and excited state of carbon atom. Hint: excited carbon has 4 valence electrons.

Answer 1

Atomic number of an atom is the number of electrons in it when it is neutral - 1 (no charge) AL(Aluminium) Atomic Number - 13 1. Electonic confignation = 15² 25² 2p% 35² 3p' one unpaived election (3p!: 1110 ) Ca (Calium) Atomic Number = 20 Electionic configuratièu = 152.28% zp• 35 3po 45 No umpaired electron Se ( Scandium) Atomic Number = 21 - Electronic configuration = 15²25² zpå 35² 3p us 3d one unpaired election (3d! In Cr Chromiuin) Atomic Number = 24 Electronic confiquation = 15% 25% 3p6 353 3pc 45' 305 six wmpaired Slections (IT] 191717) 11 11 ) Zn (zinc) Atomic Number = 30 Electronic configuration = ls 252 2p 3s 3pó us?3d0 No unpaired election Atomic number of carbon=6 . Ground electionic configuration: . 153, 25, 2p² Ground state, Abital fam: 1 m lol Excited state, orbital form 111 o ola le from 25 gets excited to ap (2) is 25 p