What is the ratio of the neutrons present in Carbon and Neon atoms with respect to their atomic mass of 12 and 20

Options

A. 6:10
B. 10:6
C. 3:5
D. 5:3

Explanation

To find the ratio of the neutrons present in Carbon and Neon atoms with respect to their atomic mass, we can follow these steps:

### Step 1: Identify the Atomic Mass and Atomic Number
- The atomic mass of Carbon (C) is given as 12.
- The atomic mass of Neon (Ne) is given as 20.
- The atomic number of Carbon (C) is 6.
- The atomic number of Neon (Ne) is 10.

### Step 2: Calculate the Number of Neutrons
The number of neutrons in an atom can be calculated using the formula:
\[ \text{Number of Neutrons} = \text{Mass Number} - \text{Atomic Number} \]

#### For Carbon:
- Mass Number = 12
- Atomic Number = 6
- Number of Neutrons in Carbon:
\[ \text{Neutrons in C} = 12 - 6 = 6 \]

#### For Neon:
- Mass Number = 20
- Atomic Number = 10
- Number of Neutrons in Neon:
\[ \text{Neutrons in Ne} = 20 - 10 = 10 \]

### Step 3: Set Up the Ratio of Neutrons
Now, we can set up the ratio of the number of neutrons in Carbon to the number of neutrons in Neon:
\[ \text{Ratio} = \frac{\text{Neutrons in C}}{\text{Neutrons in Ne}} = \frac{6}{10} \]

### Step 4: Simplify the Ratio
To simplify the ratio:
\[ \frac{6}{10} = \frac{3}{5} \]

### Conclusion
Thus, the ratio of the neutrons present in Carbon and Neon atoms is:
\[ \text{Ratio} = 3 : 5 \]

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