In a group, atomic radii increase due to successive increase of _________ ?

Related Mcqs:

1. The atomic radii decreases by increasing atomic number in________________?

   A. Alkali metal
   B. Alkaline earth metal
   C. Elements from Li to Ne
   D. Halogens

2. Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

   A. More strength of H-bonding
   B. More strength of London forces
   C. Less polarizability
   D. All of the above

3. Increase in atomic number is observed during_________________?

   A. Alpha emission
   B. Beta emission
   C. Both A & B
   D. Radioactivity

4. Melting points of VII-A group elements down the group ____________________?

   A. Increase
   B. Decrease
   C. Remain constant
   D. No regular trend

5. The number of isotopes of elements with even mass number and even atomic number are ________________?

   A. 280
   B. 300
   C. 154
   D. 54

6. How many isotopes have odd atomic number ?

   A. 154
   B. 280
   C. 86
   D. 300

7. Mostly elements have fractional atomic masses because of______________________?

   A. Mass of an atom itself is in fraction
   B. Atomic masses are average masses of isobars
   C. Atmoic masses are average masses of isotopes proportional to their relative abundance
   D. Atmoic masses are average masses of isotopes

8. Atomic number of Mn is 25 what is the electronic configuration in the ground state________________?

   A. 1s2 2s2 2p6 3s2 3p6 3d7
   B. 1s2 2s2 2p6 3s2 3p6 4s2 4p5
   C. 1s2 2s2 2p6 3s2 3p5 3d10
   D. 1s2 2s2 2p6 3s2 3p6 4s23d5

9. Atomic radius can be determined by_________________?

   A. X – ray diffraction
   B. Spectrophotometer
   C. Optical microscope
   D. Electron microscope

10. Atomic mass of an atom is present in the __________?

    A. Shell
    B. Orbit
    C. Nucleus
    D. Orbital

    Submitted by: Aamir khan Hullio