Question

In the long form of periodic table contains the maximum number of elements.

Short answer

Answer: The long form of the periodic table contains a maximum of 118 elements.

Step-by-step solution

Identifying the structure of the Periodic Table:

The periodic table is organized into seven periods (horizontal rows) and 18 groups (vertical columns). Elements are arranged within the table based on their atomic number (number of protons in the nucleus) and electron configurations, culminating in the creation of a pattern in terms of physical and chemical properties.

Counting elements present in each period:

Let's breakdown the number of elements in each period: 1. Period 1: 2 elements (hydrogen and helium) 2. Period 2: 8 elements 3. Period 3: 8 elements 4. Period 4: 18 elements 5. Period 5: 18 elements 6. Period 6: 32 elements 7. Period 7: 32 elements (although incomplete at the moment)

Calculating the maximum number of elements:

Now, we can calculate the sum of elements in all periods: 2 + 8 + 8 + 18 + 18 + 32 + 32 = 118 So, the long form of the periodic table contains a maximum of 118 elements.