Question

Which of the following will be isobar of Iron ( A= 58, Z= 26) ? *
2 points
Iron (A= 57 , Z = 26)
Nickel ( A= 58, Z = 28)
Cobalt ( A= 57, Z = 27)
none of the above​

Answer 1

Answer:

Nickel ( A= 58 , Z= 28)

Explanation:

Isobar...the mass no is equal

Answer 2

Answer:-

• Isobar of Iron [A = 58 , Z = 26]

$\large\boxed{\tt\purple{Option.C \longrightarrow Nickel [A=58 , Z= 28]}}$

First, we need to know what is an Isobar.

$\pink{\bigstar}$ $\large\underline{\bf\red{Isobars:-}}$

Isobars are those elements which have the same same mass number but different atomic number.

For instance,

• Argon [Ar] has Atomic number of 18 and Mass number of 40.

• Potassium [K] has Atomic number of 19 and Mass number of 40.

• Calcium [Ca] has Atomic number of 20 and Mass number of 40.

Therefore, Argon , Potassium and Calcium are Isobars.

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Now, the Isobar of Iron [A = 58 , Z = 26] will be the element having the same mass number as that of Iron.

Hence, looking at the options:-

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• Iron[A = 57 , Z = 26]

$\pink{\bigstar}$ Here, Iron has Atomic number of 26 and Mass number of 57.

The mass number is not same as that of Iron.

Hence, INCORRECT

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• Nickel [A = 58 , Z = 28]

$\pink{\bigstar}$ Here Nickel has Atomic number of 28 and Mass number of 58.

The mass number is same as that of Iron.

Hence, CORRECT

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• Cobalt [A = 57 , Z = 27]

$\pink{\bigstar}$ Here Cobalt has Atomic number if 27 and Mass number of 57.

The mass number is not same as that of Iron.

Hence, INCORRECT

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• None of the above

$\pink{\bigstar}$ Nickel has the same Mass number as that of Iron.

Hence, none of the above is not possible.

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Therefore, concluding after checking each option.

We can say that Nickel [A = 58, Z = 28] is an ISOBAR of Iron [A= 58 , Z =26].