In an atom with atomic no. 42 and mass no. 95,the number of electron is:

Options

A. 42
B. 95
C. 53
D. 60

Explanation

To find the number of electrons in an atom with an atomic number of 42 and a mass number of 95, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Atomic Number**: The atomic number (Z) is given as 42. The atomic number represents the number of protons in the nucleus of an atom.

2. **Understand the Relationship Between Protons and Electrons**: In a neutral atom, the number of protons is equal to the number of electrons. This means that if the atomic number is 42, the number of protons is also 42.

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