Octet Rule and its Limitations

The formal charges of atoms $\left(1\right),\left(2\right)$ and $\left(3\right)$ in the ion ${\left[\begin{array}{l}\underset{\left(1\right)}{\mathrm{O}}=\underset{\left(2\right)}{\mathrm{N}}=\underset{\left(3\right)}{\mathrm{O}}\end{array}\right]}^{+}$ is

The set of molecules in which the central atom is not obeying the octet rule is

What are the formal charges on $\mathrm{P}$ and $\mathrm{O}$ in the Lewis (electron dot) structure of the phosphate oxyanion represented in the figure?

Which of the following noble gas compound has ${\mathrm{sp}}^3\mathrm{d}$ hybridisation?

If an element is represented by its Lewis symbols as   , then A may be

What will be the probable chemical formula if the valence shell of element $\mathrm{A}$ contain three electrons, while the valence shell of element $\mathrm{B}$ contain six electrons are combined?

In the Lewis structure, the formal charge on the central atom of ${\mathrm{SnCl}}_3^{-}$ is

Maximum number of lone pairs is present in Lewis dot structure of which compound?

In ${{\mathrm{PO}}_4}^{3-}$ ion formal charge on the oxygen atom of $\mathrm{P}-\mathrm{O}$ bond is

In which of the following molecule central atom is having complete octet?

Which of the following is not an application of formal charge?

Lewis symbols are used to depict _____ in simple molecules.

The number of dots around the symbol represents the number of _____ electrons.

In ${\mathrm{OF}}_2$ molecule, the number of bond pairs and lone pairs of electrons are:

Which of the following is a Super octet molecule?

Metals lose electrons during ionization. This change is called

Assertion. The atoms in a covalent molecule are said to share electrons, yet some covalent molecules are polar.

Reason. In a polar covalent molecule, the shared electrons spend more time than average near one of the atoms

Assertion. When two hydrogen atoms approach each other to form a covalent bond, nearly $435.8 \mathrm{kJ} {\mathrm{mol}}^{-1}$ of energy is released.

Reason. When two atoms approach each other to form a covalent bond between them, potential energy of the system continuously decreases.

Assertion. ${\mathrm{SF}}_6$ is not a stable molecule.

Reason. A stable molecule must have 8 electrons around the central atom, i.e., octet rule should be satisfied.