Question

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_.​

Answer 1

The atomic number=5

The mass number=11

Further explanation

In the following element notation,

$\tt \large {{{A} \atop {Z}} \right X}$

 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