Chemistry
Grade-9
Easy
Question
What is the name given to the last group in the periodic table?
- Halogens
- Alkali metals
- Noble gases
- Pnicogens
Hint:
The last group elements have completely fulfilled orbitals.
The correct answer is: Noble gases
- In Mendeleev's periodic table there are 118 elements, arranged in 18 groups and 7 periods.
- The first group is called alkali metals.
- The last group is called noble gases.
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