Question

If an element is represented by (A, Z) e.g. Ni(60-mass no, 28-atomic no): can be written as (60, 28)
Among the following, find the total number of possible isotopic pairs formed by the given atoms.
(232, 90); (228, 88); (228, 89); (228, 90); (224, 88); (216, 84); (210, 84); (213, 84)​

Answer 1

Answer:

we get 3 set of isotopes from given data

Explanation:

isotopes means atomic mass different and atomic number same.

(232,90) and (228,90) are isotopes (A- different &z same)

(228,88) &(224,88) are isotopes

(216,84), (210,84) & (213,84) are istopes

Answer 2

Answer:

The three possible isotopic pairs formed by the given atoms.

Explanation:

Isotopes of an element are those elements which have same atomic number but different mass number.

If the element is represented as (A, Z) then, here A is the mass number and Z is the atomic number.

Therefore, the isotopes of an element have same value of Z.

• (232, 90) and (228, 90) because the value of Z = 90 is same for both. Therefore they are isotopes.
• (228, 88) and (224, 88) is the pair of isotopes. Because the value of Z = 88 is same for both but the mass number is different.
• (216, 84),  (210, 84) and (213, 84)​ are isotopes of same element because all have same value if Z which is 84.

Therefore, the number of pairs of isotopes is equal to three.

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