Why do elements in the same group have similar properties ?

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

Write the reason for the statement given below: d-block elements in the same period shows similarity.

Carbon and silicon belong to the same group and have many similarities. C Cl_4 cannot be hydrolysed but SiCl_4 can be. Why?

Transition metals are widely used as catalysts in industrial processes. Why do the transition elements exhibit greater similarity in properties compared to main group elements along the period as well as down the group?

Assess the properties of elements and classify it as p and d block elements. • form coloured compounds • includes metals and non-mentals. •show various oxidation states. • The last electrons are filled in the outermost shell. • show similar properties, in periods. •The last electrons are filled in the shell preceding the outermost shell. •Only metals are included.

An element which lies in the same group of the periodic table as mercury is

Evaluate the Mendeleev's periodic table and find the following. Are the same elements showing similar properties arranged in the same group or same period?

Which elements show similarity in chemical properties in groups and periods in the periodic table? (Noble gases, Representative elements transition elements, Lanthanoids)