Q. What is the fourth element of the periodic table of elements?
A. Beryllium (Be)
Symbol: Be
Atomic number: 4
Atomic mass: 9.012182 u
Electron configuration: [He] 2s2
Electrons per shell: 2,2
Discoverer: Louis Nicolas Vauquelin
A. Beryllium (Be)
Atomic number: 4
Atomic mass: 9.012182 u
Electron configuration: [He] 2s2
Electrons per shell: 2,2
Discoverer: Louis Nicolas Vauquelin
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- Explanation
- Beryllium is a chemical element with the symbol Be and atomic number 4. It is a relatively rare element in the universe, usually occurring as a product of the spallation of larger atomic nuclei that have collided with cosmic rays. Within the cores of stars, beryllium is depleted as it is fused into heavier elements.
- What is beryllium?
- Beryllium is a toxic bivalent element, steel gray, strong, light-weight, primarily used as a hardening agent in alloys. Beryllium has one of the highest melting points of the light metals.
