In the reaction 2Mg + O₂ → 2MgO, magnesium is: MCQ with Answer and Explanation

Explanation:
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city, Japan, due to the release of methylmercury in industrial wastewater from a chemical factory, which bioaccumulated in fish and shellfish consumed by the local population.

Explanation:
Across period 3, ionization energy increases from Na to Ar. Chlorine has high ionization energy due to high effective nuclear charge and small atomic radius, though Argon is highest. Among these, Cl has highest IE.

Explanation:
Metallurgy is the science and technology of extracting metals from their ores, purifying them, and preparing them for use. It involves various steps like concentration, reduction, and refining. Mineralogy is the study of minerals, and geology is the study of the Earth's physical structure.