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Which of these is a noble gas?
Nitrogen
Oxygen
Argon
Hydrogen
Argon
Argon belongs to Group 18 of the periodic table, known as the noble gases or inert gases. These elements are characterized by having a completely filled valence shell, which makes them chemically inert under standard conditions.
Argon belongs to Group 18 of the periodic table, known as the noble gases or inert gases. These elements are characterized by having a completely filled valence shell, which makes them chemically inert under standard conditions.
Think of noble gases as people who are perfectly satisfied and 'complete' on their own; they don't feel the need to join a 'group' (chemical bond) with anyone else.
He Never Ate Ketchup, X-ray Really (Helium, Neon, Argon, Krypton, Xenon, Radon).
ns2np6 тАФ The general stable valence shell electronic configuration of noble gases (excluding Helium).
Noble gases possess a stable electronic configuration with a full octet of electrons in their outermost shell (ns2np6). This stable configuration results in a very high ionization energy and negligible electron affinity, preventing them from readily donating or accepting electrons to form chemical bonds.
Noble gases are colorless, odorless, and monatomic under standard conditions.
They occupy the extreme right column of the periodic table (Group 18).
Argon is the third most abundant gas in Earth's atmosphere, comprising about 0.93% by volume.
Used in incandescent light bulbs to prevent the filament from oxidizing.
Provides an inert atmosphere for welding and semiconductor manufacturing.
Asphyxiation hazard in confined spaces because it displaces oxygen.
Filling electric light bulbs and fluorescent tubes.
Shielding gas in arc welding and laser manufacturing.
Atomic number of Argon is 18.
Option A (Nitrogen) is a diatomic non-metal (Group 15).
Option B (Oxygen) is a diatomic non-metal (Group 16).
Option D (Hydrogen) is a reactive non-metal (Group 1).
C is correct тАФ Argon is a noble gas belonging to Group 18 of the periodic table, characterized by a stable, full valence electron configuration.
Always remember the periodic table group trends: Group 18 elements are the most stable due to their closed shell configuration, making them non-reactive compared to the highly reactive alkali metals in Group 1.
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