Correct option is B
The correct answer is (b) Oxygen
Explanation: (Information about the correct answer):
• Oxygen is a chemical element with the symbol O and atomic number 8.
• The atomic number represents the number of protons found in the nucleus of an atom.
• In the periodic table, it is a member of the chalcogen group (Group 16).
• It is a highly reactive nonmetal and an oxidizing agent that readily forms oxides with most elements.
• It is the third-most abundant element in the universe by mass and the most abundant element in the Earth's crust.
Information Booster: (additional info around the correct answer):
• Oxygen has a standard atomic weight of approximately 16.00 u.
• Diatomic oxygen (O2) constitutes about 20.9% of the Earth's atmosphere.
Additional Knowledge: (Information about incorrect options):
Nitrogen (Option a)
• Nitrogen has an atomic number of 7.
Carbon (Option c)
• Carbon has an atomic number of 6.
Hydrogen (Option d)
• Hydrogen has an atomic number of 1.
So the correct answer is (b)
