Question

True or False:

The periodic table that is used today is the same as the periodic table that was first developed by the scientist Dmitri Mendeleev

Answer 1

Answer:

False

Explanation:

• Mendeleev was the first scientist to arrange the element in such a periodic order but there was a mistake that he arranged in increasing order of mass.
• Today we use the periodic table given by Henry Mosley where atomic no is first priority