Question

the atomic number of an element is 23 and mass number 56 how many protons and electrons does an atom of this element have???how many neutrons does it have??​

Answer 1

Question :

• the atomic number of an element is 23 and mass number 56 how many protons and electrons does an atom of this element have???how many neutrons does it have??

Solution :

representation of an element ,

$\displaystyle \mathtt{X_ Z ^A}$

here ,

• A = atomic mass number
• Z = atomic number

As per the given data

• atomic mass no = 56
• atomic no = 23

(1)

number of protons = number of electrons = atomic number

number of protons = number of electron = 23

(2)

number of neutrons = atomic mass number - atomic number

number of neutrons = 56 -23

number of neutrons = 33

Answer :

• number of protons = number of electron = 23
• number of neutrons = 33

Answer 2

$\huge\sf\pink{Answer}$

☞ Number of Protons = Number of Electrons = 23

☞ Number of Neutrons = 33

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$\huge\sf\blue{Given}$

✭ Atomic number of a element is 23

✭ Mass Number = 56

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$\huge\sf\gray{To \:Find}$

◈ How many protons & electrons does the atom have?

◈ How many neutrons does it have?

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$\huge\sf\purple{Steps}$

We know that Atomic Number is the number of protons present in the atom,so

➝ $\textsf {Number of Protons = Atomic Number}$

➝ $\red{\textsf{Number of Protons = 23}}$

In an atom the number of protons is equal to the number of electrons,i.e it is neutral,so

➳ $\small\textsf{Number of Electrons = Number of Protons}$

➳ $\green{\textsf{Number of Electrons = 23}}$

So then now the number of neurons will be,

➠ $\small\textsf{Mass Number = No Protons + No Neutons }$

➠ $\sf 56 = 23+No \ Neutons$

➠ $\sf 56 - 23 = No \ Neutons$

➠ $\sf\orange{No \ of \ Neutons = 33}$

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