neet ug counselling mcc
All the inert gases are placed in
1. Zero group
2. First group
3. Second group
4. Third group
Click here to check your answer
Based on the electronic configuration, the elements are classified into….. classes
1. Two
2. Three
3. Four
4. Five
Click here to check your answer
Elements from atomic number 89 (Actinium) to 102 (Nobelium) are known as
1. Lanthanoids
2. Actinoids
3. Inertgases
4. Representative elements
Click here to check your answer
Concept of actaves was proposed by
1. Mosley
2. Mendeleef
3. Newlands
4. Pettenkofer
Click here to check your answer