The atomic composition of element A is as follows: number of neutrons = x, atomic mass = 12, number of electrons = 6. The atomic composition of B is as follows: number of neutrons = y, atomic mass = 28, number of electrons = number of electrons in A + 8.
The ratio of x to y is:

3:2

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3:7

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7:3

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2:3

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Solution

The correct option is B 3:7
Element A is carbon (Number of electrons = 6 = Atomic number)
Number of neutrons = x = 12 – 6 = 6
Element B is silicon.
Number of electrons in A + 8 = 6 + 8 = 14
Number of neutrons = y = 28 – 14 = 14

x = 6 and y = 14
The ratio of x to y is:
x:y = 6:14 = 3:7

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Similar questions

If the number of electrons in a neutral atom is 6 and the number of neutrons is 8. Then the atomic mass of that element will be ___.

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. 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

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	-

The composition of two atomic particles is given below :

$\begin{matrix} X & Y Protons : & 8 & 8 Neutrons : & 8 & 9 Electrons : & 8 & 8 \end{matrix}$

(i) What is the mass number of X ?

(ii) What is the mass number of Y ?

(iii) What is the relation between X and Y ?

(iv) which element/elements do they represent?

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The atomic composition of element A is as follows: number of neutrons = x, atomic mass = 12, number of electrons = 6. The atomic composition of B is as follows: number of neutrons = y, atomic mass = 28, number of electrons = number of electrons in A + 8. The ratio of x to y is:

The correct option is B 3:7Element A is carbon (Number of electrons = 6 = Atomic number) Number of neutrons = x = 12 – 6 = 6 Element B is silicon. Number of electrons in A + 8 = 6 + 8 = 14 Number of neutrons = y = 28 – 14 = 14 x = 6 and y = 14 The ratio of x to y is: x:y = 6:14 = 3:7

The atomic composition of element A is as follows: number of neutrons = x, atomic mass = 12, number of electrons = 6. The atomic composition of B is as follows: number of neutrons = y, atomic mass = 28, number of electrons = number of electrons in A + 8.
The ratio of x to y is:

The correct option is B 3:7
Element A is carbon (Number of electrons = 6 = Atomic number)
Number of neutrons = x = 12 – 6 = 6
Element B is silicon.
Number of electrons in A + 8 = 6 + 8 = 14
Number of neutrons = y = 28 – 14 = 14

x = 6 and y = 14
The ratio of x to y is:
x:y = 6:14 = 3:7