QUESTION 4 5 points What is the definition of formal charge? The charge an atom

Question

QUESTION 4 5 points What is the definition of formal charge? The charge an atom in a molecule would have if only the unshared electrons are counted ine charge an atom in a molecule would have if the bonding electrons are divided equal the bonded atoms. O The charge an atom in a molecule would have if the bonding electrons are assigned to th electronegative element The charge an atom in a molecule would have if the bonding electrons are assigned to theI electronegative element 5 points QUESTION 5 Which molecule is electron deficient?

Explanation / Answer

In chemistry, a formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity.? In reality it is not so as the more electronegative atom pulls the bonded pair of electrons towards itself.

Formal charge is calculated using the equation:

FC = eV - eN - eB/2

where
eV = number of valence electrons of the atom as if it were isolated from the molecule
eN = number of unbound valence electrons on the atom in the molecule
eB = number of electrons shared by the bonds to other atoms in the molecule

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