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Consider two whole numbers 3 and 7. 3 + 7 = 10. 7 + 3 = 10. Thus, 3 + 7 = 7 + 3 . Also, 3 × 7 = 21. 7 × 3 = 21. Thus, 3 × 7 = 7 × 3. Therefore, the whole numbers are commutative under addition and multiplication. Additive identity. When a whole number is added to 0, its value remains unchanged, i.e., if x is a whole number then x + 0 = 0 ...
Non-metals are such elements which have 4,5, 6 and 7 electrons in their outermost shell. Examples of non-metals are carbon, oxygen chlorine etc. Metals are such element which have generally 1,2,3 valence electrons. Example of some metals are Sodium, Potassium, Copper etc.
Introduction. Neutralisation is a chemical reaction where an acid and a base react with each other quantitatively. It is also written as Neutralisation. The acid strength of the reactant gives the pH of the neutralised solution. Ever experienced a burning sensation in your stomach after eating too much spicy food? This is due to the formation ...
The ions that contain a greater number of protons than electrons are known to hold a net positive charge. These ions are commonly referred to as cations. On the other hand, the ions that contain a greater number of electrons than protons are known to hold a net negative charge. These ions are commonly known as anions.
Solubility is the new bond formation between the solute molecules and solvent molecules. In terms of quantity, solubility is the maximum concentration of solute that dissolves in a known concentration of solvent at a given temperature. Based on the concentration of solute dissolves in a solvent, solutes are categorized into highly soluble ...
Oct 29, 2021 · Writing the Chemical Formulae. Step 1: Write the symbol of a basic radical (element with positive valency) to the left-hand side and that of the acid radical (element with negative valency) to the right-hand side. Step 2: Write the valency of each of the respective radicals at the right-hand top of its symbol.
An isotope is a variation of an element that possesses the same atomic number but a different mass number. A group of isotopes of any element will always have the same number of protons and electrons. They will differ in the number of neutrons held by their respective nuclei.
