Find the group number and period number of element having atomic number 52.

Answer

To find the group number and period number of the element with atomic number 52, follow these steps:

### Step 1: Identify the Element
- The element with atomic number 52 is Tellurium (Te).

### Step 2: Determine the Period Number
- To find the period number, we can refer to the periodic table and the atomic numbers of the noble gases (inert gases):
- Helium (He) - Atomic number 2
- Neon (Ne) - Atomic number 10
- Argon (Ar) - Atomic number 18
- Krypton (Kr) - Atomic number 36
- Xenon (Xe) - Atomic number 54
- Radon (Rn) - Atomic number 86

- The periods are defined as follows:
- Period 1: 1-2 (He)
- Period 2: 3-10 (Ne)
- Period 3: 11-18 (Ar)
- Period 4: 19-36 (Kr)
- Period 5: 37-54 (Xe)

- Since atomic number 52 lies between 37 and 54, it is in the 5th period.

### Step 3: Determine the Group Number
- The group number can be determined by looking at the position of Tellurium in the periodic table.
- Elements in the 5th period start from atomic number 37 (Rubidium) to 54 (Xenon).
- The group number can be calculated as follows:
- The atomic number of the last element in the previous period (Krypton) is 36.
- The atomic number of Tellurium is 52.
- To find the group number, subtract the atomic number of Krypton from the atomic number of Tellurium:
\[ \text{Group Number} = 52 - 36 = 16 \]

### Final Answer
- The element with atomic number 52 (Tellurium) is in the **5th period** and **group 16**.

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