______ was discovered by the Scottish physician Daniel Rutherford in 1772.
Nitrogen
The correct answer is Option 4, i.eNitrogen.
Key Points
- Nitrogen was discovered by the Scottish physician Daniel Rutherford .
- Rutherford discovered nitrogen by the isolation of the particle in 1772 .
- Nitrogen is the chemical element with the symbol Nand atomic number 7.
- The name nitrogen was suggested by French chemist Jean-Antoine-Claude Chaptal in 1790.
- Nitrogen is the fifth most abundant element in the Universe, it constitutes 78% of Earth's air.
| Chemical Element | Discoverer |
|---|---|
| Oxygen | Joseph Priestly. |
| Hydrogen | Henry Cavendish. |
Selenium Silicon Thorium | Jöns Jakob Berzelius. |
Sodium Potassium Calcium Barium | Sir Humphrey Davy. |
| Magnesium | Joseph Black. |
| Chlorine | Carl Wilhelm Scheele. |
| Helium | Pierre Janssen, Norman Lockyer, and Per Teodor Cleve. |
Krypton Neon Xenon | Sir William Ramsay and Morris Travers, |
| Radium | Marie Curie. |
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