Write the electronic configuration of the elements given below and predict their period, group, block and also name the class, i.e., representative, transition etc. to which they belong.
`""_(61)C`

Explanation

To solve the question regarding the element with atomic number 61 (promethium, Pm), we will follow these steps:

### Step 1: Determine the Electronic Configuration
The electronic configuration of an element describes the distribution of electrons among the various orbitals. For atomic number 61, the electronic configuration can be derived as follows:

1. Fill the orbitals in order of increasing energy levels.
2. The order of filling is based on the Aufbau principle, Hund's rule, and the Pauli exclusion principle.

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