In a period the atomic radius ?

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. Atomic radius can be determined by_________________?

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

3. Molecular orbital which have higher energy than atomic orbitals is called___________________?

   A. Bonding molecular orbital
   B. Antibonding molecular orbital
   C. Hybrid orbital
   D. Super atomic orbital

4. Which of the following have their outer most shell complete in atomic form ?

   A. Noble gases
   B. Alkali metals
   C. Coinage metals
   D. Gun metals

5. What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ?

   A. Radium dating
   B. Uranium dating
   C. Carbon dating
   D. Deuterium dating

   Submitted by: Abid Hussain

6. In a group ionic radius ?

   A. Increases
   B. Decreases
   C. No change
   D. Variable trend

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 orbits having same energy are called________________?

   A. Degenerate orbitals
   B. Bonding molecular orbitals
   C. Anti bonding molecular orbitals
   D. Half filled orbitals

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

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

    Submitted by: Aamir khan Hullio