Question

a d 5. Some of these sets of quantum why If occur, write allowed b) 1.2.0, -12 e) 2, 0, 0,-1/2 d) 3.3.2. - 1/2 principal quantum numbers How many subshells are there in the electron shell with the principal quantu (Example, when n-2, number of subshells2(and p only)) ons. However, the electron 7. Titanium metal and Cr have the same number of electrons. However, the configuration of Ti is [Ar] 40-3d, but that of Cris [Ar]3d". Explain ds, K2+, Cs, AIF, sel? o achieve the noble gas configuration) Which ions in this list are likely to be found in ionic compounds, K2+. Cs. A14 nt: main group elements gain or lose electrons to achieve the noble gas com

Answer 1

5) For principle quantum number (n), azimuthal quantum number (l) lie from 0 to (n-1) and orbital quantum number lie from -l to +l. Spin can be +1/2 or -1/2

a) Allowed.

b) Not allowed. Because if n = 1 then l can only be 0 and not 2.

c) Allowed.

d) Not allowed. Because n= 3 for which l can be 0,1,2. But here l = 3 which is not possible.

6) For n=5, l = 0,1,2,3,4

Thus five l values means five subshells.

Answer is 5.