2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?

Related Mcqs:

1. The nucleus of an atom of every element will always contain____________________?

   A. neutrons B. protons and electrons C. protons D. protons and neutrons...

2. When electron jump into orbit 1 then series obtained is___________________?

   A. Lyman B. Paschen C. Pfund D. Brackett...

3. Space around nucleus where finding probability of electrons is maximum is called ____________________?

   A. Orbital B. Orbit is elliptical C. subshell D. Electron cloud...

4. Rutherford bombarded _________________ particles in discovery of nucleus?

   A. Gamma-rays B. Alpha-rays C. Beta-rays D. X-rays...

5. 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...

6. The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?

   A. Ionization energy B. Electron affinity C. Electro negativity D. None of the above...

7. Alpha (α) particles are helium (He) nucleus with a charge of __________ ?

   A. e B. 2e C. 3e D. 4e Submitted by: Rashid Mehmood...

8. A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?

   A. Beta particle B. Gamma particle C. Alpha particle D. Negative particle Submitted by: Rashid Mehmood...

9. Atoms of all the elements always contain in nucleus:

   A. Proton and neutron B. Neutron and electron C. Proton D. Neutron Submitted by: Shumail Bashir...

10. Centrifugal forces are balanced in atom by__________________?

    A. Attractive forces B. Repulsive force C. Electrons D. Neutrons...