Question

Two elements A and B have 17 electrons each in their atoms. Element A has 35 nucleons while element B has 33 nucleons. What is the relationship between these two elements? Explain

Answer 1

element A is original element and element B is isotope of element A

explaination:

same atomic number but different mass number

Answer 2

The relationship between the elements A and B is that of isotopes.

• Number of electrons in element A = 17

Number of nucleons in element A = 35

• Nucleons is the total number of protons and neutrons present in the nucleus of an element.

• Number of electrons in element B = 17

Number of nucleons in element B = 33

Therefore, number of protons + number of neutrons in B = 33

• The elements A and B differ in their number of nucleons.

• This means the relationship between these two elements is that of isoptopes.

• Isotopes are elements having the same atomic number but different mass numbers. They also have the same number of electrons.

• Thus, isoptopes have the same number of protons but different number of neutrons in their nuclei.

• Elements A and B have the same number of protons but different number of neutrons. That is why their nucleons are different in number.

• A and B are isoptopes.