Question

Choose the correct sequence of the elements arranged in their increasing order of atomic numbers:
A. Pu
B. Po
C. Pm
D. Pt
E. Pa
Choose the correct answer from the options given below :

• A. C, D, B, E, A
• B. D, C, A, B, E
• C. A, D, B, C, E
• D. B, E, D, A, C

Hint:

While memorizing the entire periodic table isn't always necessary, you should be broadly familiar with the "blocks". Lanthanides span Z=57 to 71. Actinides span Z=89 to 103. The 5d transition metals span Z=72 to 80. This general knowledge allows you to quickly sort elements even if you forget the exact atomic number.

Answer 1

The Correct Option is A