Question

Two nuclides A and B are isoneutronic. Their mass are 76 and 77 respectively. If atomic no. of A is 32 then atomic no. of B will ne​

Answer 1

Answer:

33 is ans for that one

74-30 =33

Answer 2

Given,

Two nuclides A and B are isoneutronic.

The atomic mass of A = 76

The atomic mass of B = 77

The atomic number of A = 32

To find,

The atomic number of B.

Solution,

We can easily find the atomic number of B by following the given steps.

Now,

We know that the atomic mass of an element is the sum of neutrons and protons.

So,

The atomic mass of A = 76

Number of neutrons (N) + number of protons (P) = 76

N + P = 76 --- (1)

We know that the atomic number of an element is equal to the number of electrons or protons.

The atomic number of A = 32

So,

Number of protons in A = 32 --- (2)

From equation 1,

N + P = 76

N + 32 = 76 (Putting the value of protons from equation 2)

N = 76-32

N = 44

A and B are isoneutronic. So, the number of neutrons in both the elements will be the same.

Number of neutrons in B = 44

The atomic mass of B = 77

Number of protons + number of neutrons = 77

Protons + 44 = 77

Protons = 77-44

Number of protons in B = 33

The atomic number of B will be equal to the number of protons.

Hence, the atomic number of B will be 33.