The atomic notation for a particular atom of boron is 11/5 B. The atomic number is while the mass number is_, while the mass number is_.

The atomic number=5

The mass number=11

In the following element notation,

 X = symbol of elemental atom

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

So for The atomic notation for a particular atom of Boron  :

₅B¹¹

Z=5=atomic number

A=11=mass number

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