Short Answer Type
Long Answer TypeShort Answer TypeFor a compound LiAl(SiO3)2, what is the charge on SiO3 unit? What is the arrangement of oxygen atoms around the silicon atom?
Long Answer TypeShort Answer TypeLong Answer TypeSpecies in which the central atom either does not have eight electrons in the valence shell or those which have 8 electrons in the valence shell but can expand their covalency beyond 4 due to the presence of d-orbitals are called electron deficient molecules.
BCl3 is an electron deficient compound because the central boron atom has only six electrons. As a result, it accepts a pair of electrons from NH3 to form an adduct.
SiCl4 : The electronic configuration of silicon is ns2 np2. This indicates that it has four valence electrons. after forming four covalent bonds with chlorine atoms, it electron count increases from four to eight. Thus, SiCl4 is not an electron-deficient compound.
Explain the difference in properties of diamond and graphite on the basis of their structures.
Short Answer TypeExplain why is there a phenomenal decrease is ionisation enthalpy from carbon to silicon.
. How will they behave with water? Justify
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