Physical and Chemical properties

In the modern periodic table, the element calcium (atomic number = 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these elements has physical and chemical properties resembling those of calcium and why?

Physical & Chemical properties & reactions

Physical & chemical properties of Aryl Halides

Preparation of organic halides | Physical & chemical properties of Alkyl Halides

Which physical or chemical properties affect thedecay rate or half-life ofa radioactive isotope ?

List in tabular form three physical and two chemical properties on the basis of which ethanol and ethanoic acid can be differentiated.