Why Do Some Elements Have Roman Numerals?

Why Do Some Elements Have Roman Numerals? In chemistry nomenclature (writing names systematically), Roman numerals are used for a specific group of elements. These elements are called transition metals. And the Roman numerals indicate the charges that these metals carry in a compound. Why are there Roman numerals in ionic compounds? The transition metals may

Does Magnesium Or Phosphorus Have A Larger Atomic Radius?

Does Magnesium Or Phosphorus Have A Larger Atomic Radius? Does magnesium or phosphorus have a larger atomic radius? (a)- Magnesium has a larger atomic radius due to a smaller effective nuclear charge. (b)- Phosphorus has a larger atomic radius due to a larger effective nuclear charge. (c)- Magnesium has a larger atomic radius due to