Question 3: In the lewis structure of ClF the formal charge on Cl and F is respectively-Įxplanation: Both F and Cl have 7 valence electrons, one is used in bonding with each other while rest 6 are non-bonded. When the carbon atom has three bonds and a lone pair of electrons it acquires -1 formal charge and is called carbanions. In all the molecules where carbon has four bonds, its formal charge is zero.There are few exceptions, when a carbon has only three bonds and no lone pairs of electrons it acquires a formal charge of +1 and is called carbocation. Question 2: Carbon can have formal charge of-Įxplanation: Carbon is a tetravalent atom and forms four covalent bonds. This is the most stable state of the atom. ![]() When the number of electrons and protons in an atom is equal, the formal charge on an atom is 0. Question 1: What is the most stable formal charge-Įxplanation: An atom tries to complete its octet, and when it has a preferred number of bonds to complete the octet, its formal charge is zero (0). of valence electrons on an atom) - (Non-bonded electrons on atom + number of bonds) The formal charge can be calculated using following formula-įormal charge = (No.
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