Atomic Number and atomic Mass

Atomic Number:- Total No. of proton in Nucleus is Called as Atomic Number.

·      Nucleus:-  Which are the bind proton Part & Nutron Is Called Nucleus.

·      Fundamental Particles of atom ..

a.   Proton:-    1) Proton is denoted by 'P'

    2) Contains '+ ve' Charge.

    3) It is inert part of nucleus.

           4) Atmoic mass of 'P' is 1.0078 amu

            b. Nutron:-    1) Nutron is denoted by 'N'

                                  2) Contains Chargeless.

     3) It is inert part of nucleus.

     4) Atmoic mass of 'P' is 1.0086 amu

            C.Electron:-    1) Denoted by 'e'

                                    2) Containing '-ve' Charge

                                    3) it is the outer part of the nucleus

                                    4) Atomic mass is 0.000554 amu

                                    (amu - atomic mass unit)

Atomic Mass:- Total Number of Proton and Neutron Present in nucleus is called Atomic Mass.

 

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