Question

Calculate the number of protons neutrons and electrons in 35 br 80

Answer 1

No of electrons= Atomic number= 35
No. of protons = No of electrons=35
Atomic mass= no of neutrons +no of protons
80= no of neutrons+35
no of neutrons= 80-35=45

Answer 2

Answer:

Number of neutrons = 45

Number of protons = 35

Number of electron = 35

Explanation:

In chemistry an element is represented by following notataion:

$^{A}_{Z}X$

A = Atomic mass of element

Z = Atomic number

X = symbol of an element

So, In $^{80}_{35}Br$

A = Number of neutrons + Number of protons

Z = Number of protons = 35

80 = Number of neutrons + 35

Number of neutrons = 80 - 45 = 45

Number of protons = 35 Number of electron = 35

Since, an atom is an electrically neutral sphere, the total number of electrons are equal to the total number of protons.