Explain the difference between endothermic reactions and

Solution :Step-1SiF 4 In SiF t4 central atom is S and is surrounded by four F atoms. 2 2 2 2 514i [Ne]3s 3p 9F 1s 2s 2pThe total valence electrons = 4 + 4(7) = 32The Lewis structure of SiF 4Si atom has 4 bonded pair atoms on it which is symmetrically arranged on it and there is no lonepair electron on the central atom. As it is known that an atom with 4 bond pair electrons with nononbonded electrons have a tetrahedral electron domain geometry and it has only one possible oF-Si-F bond angle 109.5 .Step-2PF 5In PF t5 central atom is P , surrounded by 5 F-atoms. 2 2 6 2 3 2 2 515 1s 2s 2p 3s 3p 9F 1s 2s 2pThe total valence electrons = 5 +