Do the isotopes of an elements have the same chemical properties?

Who showed that the atomic number of an element is a more fundamental property than its atomic mass and when?

Differentiate between metals and non-metals on the basis of their chemical properties.

How can ethanol and ethanoic acid be different on the basis of their physical chemical properties?

How will you account for the following: Among the hydrides of group 16 elements, water shows unusual physical properties.

Why do elements in the same group have similar physical and chemical properties?

How were the position of isotopes of various elements decided in the Modern Periodic Table?

Give the names of non - metals having the given properties :The only liquid non-metal