What is the group of the element having atomic number 34?

Explanation

To determine the group of the element with atomic number 34, we can follow these steps:

### Step-by-Step Solution

1. **Identify the Element**: The element with atomic number 34 is Selenium (Se).

2. **Determine the Electronic Configuration**:
- The atomic number indicates the number of electrons in a neutral atom. Therefore, Selenium has 34 electrons.
- The electronic configuration can be determined by filling the orbitals according to the Aufbau principle:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁴.
- This configuration shows that Selenium has 2 electrons in the 4s subshell and 4 electrons in the 4p subshell.

3. **Identify the Block of the Element**:
- The last electron in the electronic configuration goes into the p orbital (4p⁴), indicating that Selenium is a p-block element.

4. **Determine the Group Number**:
- For p-block elements, the group number can be calculated using the formula: Group Number = 10 + number of electrons in the p subshell.
- In the case of Selenium, there are 4 electrons in the p subshell (4p⁴).
- Therefore, the group number is 10 + 4 = 14.

5. **Final Confirmation**:
- In the periodic table, Selenium is indeed located in Group 16.

### Final Answer
The group of the element with atomic number 34 (Selenium) is **Group 16**.