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What is the atomic number of Oxygen?
6
7
8
9
8
Oxygen is a chemical element with the symbol O and atomic number 8. This means a neutral oxygen atom contains 8 protons in its nucleus and 8 electrons orbiting the nucleus.
Oxygen is a chemical element with the symbol O and atomic number 8. This means a neutral oxygen atom contains 8 protons in its nucleus and 8 electrons orbiting the nucleus.
Think of the atomic number like a unique ID number assigned to an element; just as an Aadhaar card number uniquely identifies an individual, an atomic number of 8 uniquely identifies oxygen.
Z=p=e тАФ Atomic number (Z) equals the number of protons (p) and electrons (e) in a neutral atom.
The atomic number represents the total number of protons found in the nucleus of every atom of that element. For oxygen, its nucleus contains exactly 8 protons, which dictates its electronic configuration (2,6) and its chemical properties.
The atomic number of oxygen is 8.
It belongs to Group 16 (Chalcogens) and Period 2 of the periodic table.
Its electronic configuration is 2,6 or 1s22s22p4.
Crucial for respiration in living organisms.
Essential for combustion, burning, and various industrial oxidation processes.
Standard property: Oxygen is a diatomic gas (O2тАЛ) at room temperature and constitutes about 21% of Earth's atmosphere.
Wrong options explanation: Option A (6) is the atomic number of Carbon, Option B (7) is Nitrogen, and Option D (9) is Fluorine.
C is correct тАФ Oxygen has an atomic number of 8, which corresponds to the number of protons in its nucleus.
Memorize the first 20 elements of the periodic table in sequence along with their atomic numbers and electronic configurations for quick scoring in railway and technical exams.
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