Which of the compounds shown below contains both ionic and covalent bonds? PO43- NaCl KNO3 SO3 Which set(s) of quantum n

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Which of the compounds shown below contains both ionic andcovalent bonds?
PO43-
NaCl
KNO3
SO3
Which set(s) of quantum numbers could represent a lone pair on aneutral nitrogen atom?
Option A: n = 1; l = 0;ml = 0; ms = +1/2 and-1/2
Option B: n = 2; l = 0;ml = 0; ms = +1/2 and-1/2
Option C: n = 2; l = 1;ml = -1; ms = +1/2 and-1/2
Option D: n = 2; l = 0;ml = 0; ms = +1/2 or-1/2
Options A and B
Option A
Options C and D
Option B
Option C
Options B and C
Option D
Options A and C