Nitrogen (N): Bohr Model, Protons, Neutrons & Electrons
Nitrogen is element number 7, a nonmetal in group 15, period 2. Its atom has 7 protons, 7 neutrons and 7 electrons arranged in 2 shells: 2, 5.
Protons, neutrons and electrons in nitrogen
ال atomic number of nitrogen is 7, so every nitrogen atom has 7 protons. A neutral atom has the same number of electrons, 7. The number of neutrons depends on the isotope: neutrons = mass number − atomic number. For nitrogen-14, that is 14 − 7 = 7 neutrons. Nitrogen has 2 stable isotopes, with 7, 8 neutrons.
How to draw the Bohr model of nitrogen
- Draw the nucleus and write 7 p⁺ تم تصميم [الخدمة] لمتعلمين من جميع الأعمار، بما في ذلك طلاب المدارس. 7 n⁰ inside it.
- Draw the first shell and put 2 electrons on it (the first shell holds at most 2).
- Draw the second shell and put 5 electrons on it.
- Check: 2 + 5 = 7 electrons, the same as the number of protons.
Electron configuration
The electron configuration of nitrogen is [He] 2s² 2p³. Its 5 outer electrons decide how it reacts: it tends to gain 3 more, forming N³⁻ ions.
Key facts about nitrogen
| Symbol | N |
|---|---|
| Atomic number | 7 |
| Relative atomic mass | 14.007 |
| Group · period · block | group 15 · period 2 · p-block |
| نوع | Nonmetal |
| State at 25 °C | gas |
| أغلفة الإلكترون | 2, 5 |
| Electron configuration | [He] 2s² 2p³ |
| Valence electrons | 5 |
| Common ion | N³⁻ |
| Electronegativity (Pauling) | 3.04 |
| First ionisation energy | 14.53 eV (1402 kJ/mol) |
| Atomic radius (empirical) | 65 pm |
Where nitrogen sits on the periodic table
الأسئلة الشائعة
How many protons, neutrons and electrons does nitrogen have?
Nitrogen has 7 protons and 7 electrons (atomic number 7). Its most common isotope, nitrogen-14, has 14 − 7 = 7 neutrons.
What is the electron configuration of nitrogen?
[He] 2s² 2p³. In shells that is 2, 5.
How many valence electrons does nitrogen have?
5. Nitrogen is in group 15, and its outer shell holds 5 electrons.
Where is nitrogen on the periodic table?
In group 15, period 2, in the p-block. It is a nonmetal.
