Silver (Ag): Bohr Model, Protons, Neutrons & Electrons
Silver is element number 47, a transition metal in group 11, period 5. Its atom has 47 protons, 60 neutrons and 47 electrons arranged in 5 shells: 2, 8, 18, 18, 1.
Protons, neutrons and electrons in silver
ال atomic number of silver is 47, so every silver atom has 47 protons. A neutral atom has the same number of electrons, 47. The number of neutrons depends on the isotope: neutrons = mass number − atomic number. For silver-107, that is 107 − 47 = 60 neutrons. Silver has 2 stable isotopes, with 60, 62 neutrons.
How to draw the Bohr model of silver
- Draw the nucleus and write 47 p⁺ تم تصميم [الخدمة] لمتعلمين من جميع الأعمار، بما في ذلك طلاب المدارس. 60 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 8 electrons on it.
- Draw the third shell and put 18 electrons on it.
- Draw the fourth shell and put 18 electrons on it.
- Draw the fifth shell and put 1 electron on it.
- Check: 2 + 8 + 18 + 18 + 1 = 47 electrons, the same as the number of protons.
From potassium onwards the shells don’t simply fill as 2, 8, 8: the fourth shell starts before the third is full, so the real arrangement above (2, 8, 18, 18, 1) is the one to draw.
Electron configuration
The electron configuration of silver is [Kr] 5s¹ 4d¹⁰. As a transition metal it fills an inner d-subshell, and its common ion is Ag⁺.
Key facts about silver
| Symbol | Ag |
|---|---|
| Atomic number | 47 |
| Relative atomic mass | 107.87 |
| Group · period · block | group 11 · period 5 · d-block |
| نوع | Transition Metal |
| State at 25 °C | solid |
| أغلفة الإلكترون | 2, 8, 18, 18, 1 |
| Electron configuration | [Kr] 5s¹ 4d¹⁰ |
| Valence electrons | varies (outer shell: 1) |
| Common ion | Ag⁺ |
| Electronegativity (Pauling) | 1.93 |
| First ionisation energy | 7.58 eV (731 kJ/mol) |
| Atomic radius (empirical) | 160 pm |
Where silver sits on the periodic table
الأسئلة الشائعة
How many protons, neutrons and electrons does silver have?
Silver has 47 protons and 47 electrons (atomic number 47). Its most common isotope, silver-107, has 107 − 47 = 60 neutrons.
What is the electron configuration of silver?
[Kr] 5s¹ 4d¹⁰. In shells that is 2, 8, 18, 18, 1.
How many valence electrons does silver have?
Silver is a transition metal, so its valence electrons are spread over two shells; its outermost shell holds 1.
Where is silver on the periodic table?
In group 11, period 5, in the d-block. It is a transition metal.
