Question

find the number of protons electrons and neutrons in the uranium atom represented below
235 u
92

Answer 1

Answer:

The 235U(4+), for example, would contain 92 - 4 = 88 electrons. Find the number of neutrons in the isotope by subtracting the number of protons from the mass number given in the symbol. For example, 235U, which contains 92 protons, therefore contains 235 - 92 = 143 neutrons.

Answer 2

Answer:

Number of protons = 92

Number of electrons = 92

Number of neutrons = 143.

Explanation:

An element is represented as:

${}_{\rm{Z}}^{\rm{A}}{\rm{X}}$

Where

X is the element

Z is the atomic number.

A is the mass number.

Also,

Atomic number (Z) of an element is equal to the number of protons of that element.  

And mass number (A) is defined as the sum of the protons and neutrons of the element.

Thus, for the given Uranium atom, Mass number (A) = 235 and Atomic number (Z) = 92

As atomic number = number of protons, that means

Number of protons = 92

As Uranium atom is a neutral atom ,thus number of electrons = number of protons = 92.

Next,

$Mass\ number = number\ of\ protons\ +\ number\ of\ neutrons\\Number\ of\ neutrons\ =\ Mass\ number\ - number\ of\ protons$

$Number of neutrons = 235-92 = 143$

Hence,

Number of protons = 92

Number of electrons = 92

Number of neutrons = 143.

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