Question

symbol 12²⁴ MG whats the element, number of electrons, neutrons, protons​

Answer 1

Required answers :-

• Name of the element- Magnesium
• No.of electrons - 12
• No.of protons - 12
• No.of neutrons - 12

$\huge\pmb {Explanation:-}$

As, we know that ,

$\bf_{ Z } {}^{A} X$

X is called - Element

A is called - Mass number

Z is called - Atomic number

So,

$\bf_{12} {}^{24} Mg$

Mg is called - Name of element

24 is the mass number

12 is the Atomic number

$\red{Element\: is\: - Magnesium}$

As, the Atomic number is 12

$\red{No\: .of\: electrons\: present = 12}$

$\red{No\: .of \:protons\: present = 12}$

Now,

We know the formula to find No.of neutrons that is

$\bf \: no. \: of \: neutrons = (mass \: number) -( atomic \: number)$

$\bf \: N = A - Z$

$= (24) - (12)$

$= 24 - 12$

$= 12$

$\red{No\: .of \:neutrons\: = 12}$

__________________________

Know more :-

Number of electrons and protons of a element is same i.e nothing but their Atomic number

(Atomic number= No.of electrons = No.of protons)

Neutrons can be find through the formula of (A-Z)

Atomic mass of  first 20 elements :-

1) Hydrogen - 1

2)Helium - 4

3)Lithium - 7

4)Beryllium - 9

5)Boron - 11

6)Carbon - 12

7)Nitrogen - 14

8)Oxygen - 16

9)Fluorine - 19

10)Neon - 20

11) Sodium - 23

12) Magnesium - 24

13) Aluminum- 27

14) Silicon- 28

15) Phosphorus- 31

16) Sulphur - 32

17) Chlorine - 35.5

18) Argon - 40

19) Pottasium- 39

20) Calcium - 40

Here, numberings(1,2,..) are called atomic numbers