Unpaired electron in a molecule gives ______________ character ?

Related Mcqs:

1. When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?

   A. 0.33 nm
   B. 0.34 nm
   C. 0.35 nm
   D. 0.36 nm

2. The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?

   A. Dipole-dipole forces
   B. Ion dipole-dipole forces
   C. London dispersion forces
   D. Debye forces

3. A specie with maximum number of unpaired electrons ?

   A. F
   B. H2O
   C. HF
   D. NH-2

4. Which one has maximum number of unpaired electrons ?

   A. 6X
   B. 7Y
   C. 9Z
   D. 13W

5. Which specie has unpaired electrons in antibonding molecular orbitals_______________?

   A. O2+2
   B. N2-2
   C. B2
   D. O2-2

6. The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?

   A. 7
   B. 10
   C. 12
   D. 16

7. Energy required to remove electron from an atom______________?

   A. Ionization potential
   B. Electronegativity
   C. Electron affinity
   D. Activation energy

8. Which of the following will have highest value of electron affinity_________________?

   A. F
   B. Cl
   C. Br
   D. I

9. Sharing of 1 electron pair by one specie forms_________________?

   A. Single covalent bond
   B. Hydrogen bond
   C. Double covalent bond
   D. Coordinate covalent bond

10. Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?

    A. 3 bond pair one lone pair
    B. 2 bond pair 2 lone pair
    C. 1 bond pair 3 lone pair
    D. 3 lone pair 1 bond pair