Question

Which of the following statements is correct?

• A. Elements of 3d and 4d – series are kept separately in periodic table.
• B. Elements of 4f and 5f series are kept separately in periodic table.
• C. Elements of 5p and 6p series are kept separately in periodic table.
• D. All statements are correct.

Answer 1

Answer: (B)

Elements of 4f and 5f series are kept separately in

periodic table.

Answer 2

: Elements of 4f – and 5f – series are kept separately as lanthanoids and actinoids.