Question

Molecular Structure and Physical Properties Consider the following statements and determine which are true and which are false. Bond angles for IF6+ are 60 °. KrF4 has a see-saw structure. Silane (SiH4) is a polar molecule. NO3' has only two resonance Lewis structures. SeF4 is a polar molecule. The formal oxidation state of an atom in a molecule (or molecular ion) can be calculated as: (the number of valence electrons on a free atom) minus (half the number of electrons in bonds to that atom) minus (the number of unshared electrons assigned to the atom in the molecule)

Answer 1

structure of Ito from USER ofere no. of elechon around the valence shell of Centrul I alom is roof No. of valence elechon around t elechon provided by 6 fligand tone anit negative charge. = 2 + 6 +} = { / e m - 7 elechon-pais 6 boud pae'r ous Hybridization of central alom is = sp²d3 Thus as there is one lone pair so the geometry will be disturbed octahechal. And boud angle will not be eqreal to 60% The statement is false. Tolms no. of eketron (valence) orrorind the central ky atom No. valence elechon round kr. = No.of elech provided by G ligand. 2 + 4 = 12 elchon = 6 elechon pair. e 6 6300 pai's + 2 loud ra there was 4 mono- negative rue o motind Hybridisation a sp3d2 Structure will be © . They it has so leone pland Shucheme so > fol.se Koty has bee-said strueterre

hsily though those electronegatiring difference between asi and H' afrin makier sit bond - 4 bond poler, poler, but due to its tetrahedral structure the soud ene cancel one another that will gives nse to non-polas molecule. HA 7 (Resultant moment aloy upward direction its-7> Resultant moncent alory down and direction at 4 Dipole moment (ulao is false . The state ment @co > No No Thus Noz has three resonance Lecois structure and all ④ and 6 0 are equivalent rescuabing Streecture. The statement is false @ Sofu central Sefu has atom se natal see-saw structure with having sp3d wybridization. that is F - a se a ( see-saw) Thes here Soud moment arising the electo negativity difference of se & r do not cancel one another tuus it has dipole moment (uto) They the statement is true from atom finite

as Format oxidation state is defined assigned Changed on an atom in a nole culle. Mirthe Matically formal one'dation starte on anatem. 2 valence elechon around the free ofur - (no. of electrons in Goud to thatatom] - (no.004 unshared electrons assegned ting that atoms in a moleucle) tree. Thus the statement