Question

How many
neutron are in
52 2+
x
25​

Answer 1

Here is your answer:

The number of neutrons = mass number - atomic number

now, 52 - 25 = 27 neutrons are present in the element 'X'

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Answer 2

Question:

How many  neutrons are in  (⁵²X₂₅)⁺² ?

Answer:

Mass number = Number of neutrons and protons in an atom = 52

Atomic number = Number of protons in atom = 25

Number of neutrons = Mass Number - Atomic Number = 52 - 25 = 27

Number of electrons = Atomic Number - Charge = 25 - 2 = 23

Extra Information:

Atom=>

1. It is the smallest part of matter.

2. Every type of matter whether it be solid, liquid, gas, plasma all are composed of neutral or ionized atoms.

3. Atom size => 100 picometers or 1×10⁻¹⁰ m

4. Atom is composed of nucleus and electrons(negatively charged) and inside nucleus there are neutrons(neutral) and protons(positively charged).

5. Charge on Electron = -1.6 x 10⁻¹⁹ coulomb

Charge on Neutron = 0

Charge on Proton = +1.6 x 10⁻¹⁹ coulomb

6. Electrons revolve around nucleus.

7.  $^{A} X_{Z}$ In this,

X = Atomic Symbol

A = Mass Number = Number of neutrons and protons in an atom

Z = Atomic number = Number of protons in atom