The nucleus of Iron atom contains 26 protons and 30 neutrons. Find its atomic number, mass number and number of electrons present in it. How the atom should be represented?

Answer

To solve the problem regarding the Iron atom, we will follow these steps:

### Step 1: Determine the Atomic Number
The atomic number (Z) is defined as the total number of protons in the nucleus of an atom.

Given:
- Number of protons = 26

Thus, the atomic number (Z) = 26.

### Step 2: Calculate the Mass Number
The mass number (A) is the total number of protons and neutrons in the nucleus of an atom.

Given:
- Number of protons = 26
- Number of neutrons = 30

Mass number (A) = Number of protons + Number of neutrons
A = 26 + 30 = 56.

### Step 3: Find the Number of Electrons
In a neutral atom, the number of electrons is equal to the number of protons.

Since the atomic number (which is the number of protons) is 26, the number of electrons is also 26.

### Step 4: Represent the Atom
The representation of an atom is typically in the form of A/Z X, where:
- A = mass number
- Z = atomic number
- X = chemical symbol of the element

For Iron:
- Chemical symbol (X) = Fe
- Atomic number (Z) = 26
- Mass number (A) = 56

Thus, the representation of the Iron atom is:
\[ \text{^{56}_{26}Fe} \]

### Summary of Results:
- Atomic Number (Z) = 26
- Mass Number (A) = 56
- Number of Electrons = 26
- Representation of the atom = \[ \text{^{56}_{26}Fe} \]

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