Which species below violates the octet rule?  (a) NF3 (b) IF3 (c) SbF3 (d) CF4

Between Baron, Oxygen, Hydrogen, Carbon, and Nitrogen, which 2 atoms can have incomplete octets?

Write Lewis structures for the following molecules or ions, which have central atoms at do not obey the octet rule: I PFS BI 3 Cl₂ b) KrC16 d) BrFs

In the following list of molecular formulas identify which violate the octet rule for the central atom. a) NH3 b) PCl5 c) CS2 d) ClF3 e) PCl3

In developing the concept of electronegativity, Pauling usedthe term excess bond energy for the difference between the ac-tual bond energy of X−Y and the average bond energies of X−X and Y−Y (see text discussion for the case of HF). Based on the values in Figure , which of the following sub-stances contains bonds with noexcess bond energy?(a) PH₃ (b) CS₂(c) BrCl(d) BH₃ (e) Se₈

What compound below has a central atom without an octet? OAICI3 O SiH4 O H2S O SiO2

Part A)   Out of the following, the species with a single covalent bond is:   (a)   CO                       (b)   CN-          (c)   Cl2           (d)    N2     Part B)  Which of the following compounds has ionic bonds only? (a)    NH4ClO4                                    (b)    Mg3N2                        (c)    Mg3(PO4)2                  (c)   CHCl3   Part C)   The molecular shape and polarity of xenon tetrafluoride are:   (a)   Tetrahedral & non-polar             (b)   square planar & non-polar (c)    Square pyramidal & polar          (d)   square planar & polar