To find the number of neutrons in sodium (Na) and magnesium (Mg), we subtract the atomic number from the atomic mass: Sodium (Na) has an atomic number of 11 and an atomic mass of 23. Neutrons = 23 – 11 ...
Discussion Forum Latest Questions
The molecular mass of glucose (C6H12O6) is calculated by adding the atomic masses of its constituent atoms: 6 carbon (12 u), 12 hydrogen (1 u), and 6 oxygen (16 u). This gives a total of 180 u. So, the correct ...
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 ...
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 ...