PASSAGE - 1: In Mendeleeff's periodic table elements were classified on the basis of atomic weight & in modern periodic table on the atomic number. The lighter elements of 2 & 3 periods show similarities in their properties called diagonal relationship 1. Which of the following element is not present in Mendeleeff's periodic table

PASSAGE - 1: In Mendeleeff's periodic table elements were classified o

1.	PASSAGE - 1: In Mendeleeff's periodic table elements were classified on the basis of atomic weight & in modern periodic table on the atomic number. The lighter elements of 2 & 3 periods show similarities in their properties called diagonal relationship 1. Which of the following element is not present in Mendeleeff's periodic table
Answer» CARBON CHLORINE Argon POTASSIUM ANSWER :C