The correct answer is: (c) Atoms of same or different elements can join together to form molecules. Molecules are formed when atoms of either the same element (e.g., O₂) or different elements (e.g., H₂O) bond together. The combination of atoms ...
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The correct answer is: (b) in mass and chemical properties. Atoms of a given element are identical in terms of their mass and chemical properties. They have the same number of protons, which defines the element, and their behavior in ...
Magnesium (Mg) and sulfur (S) combine to form magnesium sulfide (MgS) according to the reaction: Mg + s → From atomic masses: Magnesium (Mg) = 24 g/mol Sulfur (S) = 32 g/mol The ratio of magnesium to sulfur in MgS is:
(a) +3 and -3 respectively. Aluminium (Al) has a valency of +3 because it loses three electrons to achieve stability. Phosphate (PO₄³⁻) has a valency of -3 as it gains three electrons. They combine to form AlPO₄ in a neutral ...