In the following table, six elements A, B, C, D, E and F of the modern periqdic table with atomic numbers 3 to 18 are given:

[Murali]

In the following table, six elements A, B, C, D, E and F of the modern periqdic table with atomic numbers 3 to 18 are given:

1. Which of these is

• Noble gas
• halogen?

2. Which of these is the most active metal in 3rd period?
3. Identify the most electronegative element in the third period.
4. In the compound between B and F what type of bond will be formed?
5. What would be the nature of oxide formed by C?

Answer:

• Noble gas - G
• Halogen - F

2. Most active metal - B
3. Most electronegative in 3rd period - F
4. Ionic bond
5. Oxide formed by C would be basic.