A fictitious element, "A", has 13 electrons. Which is a possible set of quantum numbers for one of its electrons in an s-sublevel at ground state?

A fictitious element, "A", has 14 electrons. Which of the following is not a possible set of quantum numbers for one of its electrons in an p-sublevel at ground state?

Element "A" has 5 valence electrons and element "B" has 7 valence electrons. When "A" and "B" combine, they form AB₃. "A" has an electronegativity value of 2.9 and "B" has an electronegativity value of 3.5. Both "A" and "B" follow the octet rule. Based on this information, which of the following is true.

A. The compound contains non-polar bonds.

B. The compound is polar.

C. The compound is bent in shape.

D. The compound contains bonds only.

E. Two of these are correct