Questions and Answers
ما هو تكافؤ elemento الهيدروجين؟
1
ما هو元素 المعدن الذي له تكافؤ 3؟
الالمنيوم
ما هو عنصر غير معدني ي sahiptir tekafuo 2؟
الأكسجين
أي من العناصر المعدنية لها tekafuo 2, 3؟
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أي من العناصر لاتكافؤه 1؟
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Study Notes
Chemical Symbols and Valency of Elements
Here are the chemical symbols and valency of the given elements:
Alkali Metals
- Hydrogen (H) - Valency: 1
- Sodium (Na) - Valency: 1
- Potassium (K) - Valency: 1
Non-Metals
- Chlorine (Cl) - Valency: 1, 3, 5, 7
- Oxygen (O) - Valency: 2
Metals
- Aluminum (Al) - Valency: 3
- Magnesium (Mg) - Valency: 2
- Calcium (Ca) - Valency: 2
- Copper (Cu) - Valency: 1, 2
- Mercury (Hg) - Valency: 1, 2
- Iron (Fe) - Valency: 2, 3
Note: The valency of an element is the number of electrons an atom of that element can gain, lose, or share to form a bond with another atom.
