The elements `Z = 117` and `120` have not yet have been discovered, In which family`//`group would you place these elements and also give the electronic configuration in each case.

Explanation

To solve the question regarding the placement and electronic configuration of elements with atomic numbers 117 and 120, we can follow these steps:

### Step 1: Determine the Electronic Configuration of Element Z = 117
1. **Identify the nearest noble gas**: The nearest noble gas before element 117 is Radon (Rn), which has an atomic number of 86.
2. **Write the electronic configuration**: Start from Radon and fill the orbitals according to the Aufbau principle:
- Radon (Rn): 86 electrons
- Next, fill the orbitals:
- 5f can hold up to 14 electrons,
...