Draw the structure of the following atoms showing the nucleus containing - protons, neutrons and the orbits with the respective electrons : Sodium [At. no. 11, Mass no. 23].

Draw the structure of the following atoms showing the nucleus containing - protons, neutrons and the orbits with the respective electrons : Lithium [At. no. =3, Mass no. = 7].

Draw the structure of the following atoms showing the nucleus containing - protons, neutrons and the orbits with the respective electrons : Carbon [At. no. 6, Mass no. = 12].

Draw the structure of the following atoms showing the nucleus containing - protons, neutrons and the orbits with the respective electrons : Silicon (At. no. 14, Mass no. = 28].

Draw the structure of the following atoms showing the nucleus containing - protons, neutrons and the orbits with the respective electrons : Isotopes of hydrogen [""_(1)^(1)H,""_(1)^(2)H,""_(1)^(3)H]

The charge on the atom containing 8 protons, 9 neutrons and 9 electrons is

Draw the resonance Structures of Phenol showing the electron shift .

Which of the following atom does not contain the same number of protons and neutrons in its nucleus?

The number of protons, neutrons and electrons in 175_71 Lu , respectively, are:

Thomson proposed that the nucleus of an atom contains protons and neutrons.

Which of the following particles is not present in all atoms : electron, proton, neutron ?