Question

A and B are two elements which have same atomic weight and r having atomic number 27 and 30 respectively. If the atomic weight of element A is 57 than the number of neutrons in B are..pls explain

Answer 1

since A and B have same atomic mass
therefore atomic mass of B is also 57
no of neutrons= mass number - number of protons
=57-30
=27

Answer 2

Given:

Atomic weight of A = 57

Atomic weight of B = Atomic weight of A = 57

Atomic number of A = 27

Atomic number of B = 30

To find:

Number of neutrons in element B = ?

Formula to be used:

Number of neutrons = Atomic mass - Atomic number

Calculation:

To calculate the number of neutrons in element B, the required values are:

Atomic weight of element B =57

Atomic number of element B = 30

When this values are substituted in the following formula, it gives:

Number of neutrons = Atomic mass - Atomic number

Number of neutrons = 57 - 30

Number of neutrons = 27

Conclusion:

The element B has 27 neutrons.

Learn more about such concept

Calculate the number of mole molecules and neutrons in 49 gram of H2So4

https://brainly.in/question/4344520

Calculate the number of protons neutrons and electrons in 35 br 80

https://brainly.in/question/4552936