Question

Determine the atomic number of an element where atomic nucleus has mass number 24 and neutron

number 12.What is the symbol of the element. ​

Answer 1

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Here's your answer

Structure Of The Atom. Calculate the atomic number of an element whose atomic nucleus has mass number 23 and neutron number 12. What is the symbol of this element? The element is sodium (Na).

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Answer 2

Given :

• The mass number of an element is 24.
• The number of neutrons in an element are 12.

To find :

• The atomic number of an element.
• Symbol of an element.

$\;\large\underbrace{\underline{\sf{Understanding\;the\;Concept}}}$

In the question, It is given that the element has atomic nucleus has mass number 24 and number of neutrons are 12. To find the atomic number of an element, We have to use the formula of mass number. Now, we can get the symbol of an element once we find the atomic number.

Solution :

To find the atomic number of an element = ?

Using the fomula of mass number,

${\red{\underline{\boxed{\bf Mass \ number \ = \ atomic \ number \ - \ Number \ of \ neutrons}}}}$

$\bf Atomic \ number \ = \ 23 \ - \ 12$

$\therefore \sf Atomic \ number \ of \ an \ element \ is \ 12$

Therefore,

We know that,

The element with atomic number 12 is sodium.

The symbol of sodium is Na.

$\therefore$ The symbol of an element is Na.