Question
Download Solution PDFWhat is the number of protons present in beryllium.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 4.
Key Points
- Beryllium is a chemical element with the symbol Be and atomic number 4.
- The atomic number represents the number of protons in the nucleus of an atom. Therefore, every atom of beryllium contains 4 protons.
- The number of protons determines the identity of the element. Any atom with 4 protons is always beryllium.
- In a neutral beryllium atom, the number of electrons (negatively charged particles) is 4, balancing the positive charge of the 4 protons.
Additional Information
| Element | Symbol | Number of Protons |
|---|---|---|
| Hydrogen | H | 1 |
| Helium | He | 2 |
| Lithium | Li | 3 |
| Beryllium | Be | 4 |
| Boron | B | 5 |
| Carbon | C | 6 |
| Nitrogen | N | 7 |
| Oxygen | O | 8 |
| Fluorine | F | 9 |
| Neon | Ne | 10 |
| Sodium | Na | 11 |
| Magnesium | Mg | 12 |
| Aluminum | Al | 13 |
| Silicon | Si | 14 |
| Phosphorus | P | 15 |
| Sulfur | S | 16 |
| Chlorine | Cl | 17 |
| Argon | Ar | 18 |
| Potassium | K | 19 |
| Calcium | Ca | 20 |
Last updated on May 28, 2025
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