Which of the following has unchanged valency?
Na is alkali metal and it has unipositive charge in all its compounds.
645 MCQ for effective preparation of the test of Basics of Chemistry section.
Read the MCQ statement: Which of the following has unchanged valency? , keenly and apply the method you have learn through the video lessons for Basics to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 202-2388.