Which of the following statement(s) is/are correct?

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Mendeleev's periodic law was based on atomic numbers of the element.

Zero group was not present in the periodic table when Mendeleev presented it.

The effective nuclear charge (Zeff) is the atomic number minus shielding effect.

There are four transition series in the periodic table each one consists of 10 elements.

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Statements (2), (3) and (4) are correct.(1) False. This law was based on atomic masses of the elements.

Watch 3-min video & get full concept clarity