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How many elements are present in the 18th group of the periodic table?
- A5
- B6
- C7
- D8
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CCommunity
The 18th group contains 7 elements namely:
- Helium (He)
- Neon (Ne)
- Argon (Ar)
- Krypton (Kr)
- Xenon (Xe)
- Radon (Rn)
- Oganesson (Og)
They are known as the noble gases because of their extremely unreactive nature. Due to their inertness, they are often used in packaging and to provide an unreactive environment for chemical reactions. Some of these gases are also used in lasers.
Oganesson is a synthetic element with symbol Og and atomic number 118. It was first synthesized in 2002. In December 2015, it was recognized as one of the four new elements by IUPAC and IUPAP.
- Helium (He)
- Neon (Ne)
- Argon (Ar)
- Krypton (Kr)
- Xenon (Xe)
- Radon (Rn)
- Oganesson (Og)
They are known as the noble gases because of their extremely unreactive nature. Due to their inertness, they are often used in packaging and to provide an unreactive environment for chemical reactions. Some of these gases are also used in lasers.
Oganesson is a synthetic element with symbol Og and atomic number 118. It was first synthesized in 2002. In December 2015, it was recognized as one of the four new elements by IUPAC and IUPAP.