VBT for crystals

what is the geometry for dsp3 hybridisation

• trigonal bipyramidal

• square planar

• Octahedral

• tetrahedral

VBT explains about the colour of the coordination complexes

• True

• False

According to VBT, the formation of a stable bond requires _____________

• a) The electrons should have opposite spins

• b) The two atoms should be close to each other

• c) The greater overlapping of the electron clouds

• d) All of the mentioned

Select the correct IUPAC name for: [Co(NH₃)₆]²⁺

• (a) hexammoniacobaltate(II) ion

• (b) hexaamminecobaltate(II) ion

• (c) hexammoniacobalt(II) ion

• (d) hexaamminecobalt(II) ion

• (e) hexammoniacobalt ion

Which of the following metal complexes has a co-ordination number of 4?

• [CuCl₄]^2-

• Fe(OH)₃

• Al(H₂O)₃(OH)₃

• Cu(OH)₂

Transition elements are defined as

• d block elements from Sc to Zn
• d block elements with electrons in d orbital
• d block elements with 3d orbitals
• d blocks elements with partially filled d orbitals

Electron configuration for Cr is 4s¹3d⁵ and NOT 4s²3d⁴. Why?

• Half filled 3d orbital is most stable

• Fully filled orbital is more stable

• 4s¹ is more stable than 4s²

• 3d⁵ is more stable than 3d⁴

Electron configuration for Cu is 4s¹3d¹⁰ and NOT 4s²3d⁹. Why?

• Half filled 3d orbital is most stable
• Fully filled 3d orbital is more stable
• Partially filled 3d orbital is more stable
• 4s¹ is more stable than 4s²

Which of the following is FALSE about complex ion shown in diagram below?

• Overall charge of 2-
• CI^- ion as ligands
• Cu²⁺ as transition metal ion
• Covalent bonding between Cu²⁺ and ligands

What is a ligand

• An atom, molecule or ion that forms a dative covalent bond to a central metal ion in a complex.

• An atom, molecule or ion that accepts a pair of electron from a central metal ion in a complex.

• A central metal ion with one or more covalent bonds to it

• A d-block element that has a partially filled d subshell