hey guys, i have 2 questions...hopefully u can help me out!
1. this multiple choice MAY have more than 1 answers...but i only got 1 answer so i just want to know whether u guys think there's only 1 answer as well.
Which of the following statements is/are incorrect?
(a) The exact momentum and position of an electron cannot be determined.
(b) Lower energy orbitals are filled with electrons before higher energy orbitals.
(c) When filling orbitals of equal energy, 2 electrons will occupy the same orbital before filling a new orbital.
(d) No two electrons in a particular atom can have the same value for all 4 quantum numbers.
(i got (c) as the incorrect statement. are there anymore there do u think?)
2. For which of the following species if more than one lewis (resonance) structure required to correctly describe the molecule?
(a) Li2S (b) NH3 (c) NO2- (d) ClO4- (e) none of these
(i got (c) where O=N-O. what do u guys think?)