Atomic number=??

Mass number=24

No of neutrons=?

Number of protons=???

Number of electrons=12

Name of the element is Magnesium.

Please explain the procedure to find out the blanks left out

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Solution

Atomic number = Number of electrons = 12

No of neutrons= mass number - number of electrons = 24-12 = 12

Number of protons = number of electrons = 12

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Similar questions

Q. Complete the following table.

(i)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
9	-	10	-	-	-

(ii)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
16	32	-	-	-	Sulphur

(iii)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
16	32	-	-	-	Sulphur

(iv)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
-	2	-	1	-	-

(v)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
-	1	0	1	1	-

Q. Which of the following are true for an element?
(i) Atomic number = number of protons + number of electrons
(ii) Mass number = number of protons + number of neutrons
(iii) Atomic mass = number of protons = number of neutrons
(iv) Atomic number = number of protons = number of electrons

Which of the following statements is/ are correct about neutral elements?

(i) Atomic number = number of protons = number of electrons
(ii) Mass number = number of protons + number of neutrons
(iii) Atomic number = number of protons + number of electrons
(iv) Mass number = number of neutrons = number of electrons

Q. An atom of an element contains

13

electrons. Its nucleus has

14

neutrons. Find out its atomic number and approximate atomic mass. An isotope has atomic mass

2

units higher. What will be the number of protons, neutrons and electrons in the isotope?

Fill in the following blanks in respect of an atom of an element :

Number of protons	Number of neutrons	Mass number	Atomic number	Number of electron	Valency
11	12	.............	.............	.............	.............

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Atomic number=?? Mass number=24 No of neutrons=? Number of protons=??? Number of electrons=12 Name of the element is Magnesium. Please explain the procedure to find out the blanks left out

Atomic number = Number of electrons = 12 No of neutrons= mass number - number of electrons = 24-12 = 12 Number of protons = number of electrons = 12

Atomic number=??

Mass number=24

No of neutrons=?

Number of protons=???

Number of electrons=12

Name of the element is Magnesium.

Please explain the procedure to find out the blanks left out

Atomic number = Number of electrons = 12

No of neutrons= mass number - number of electrons = 24-12 = 12

Number of protons = number of electrons = 12