The fourteen elements from Ce to Lu are known as

The horizontal columns in a periodic table are known as

In the modified form of Mendeleev's periodic table,all the known elements have been arranged in ten horizontal columns called 

With which of the following electronic configuration an atom has the lowest ionisation enthalpy ?

 The elements were arranged in increasing order of their atomic mass,the properties of every eighth element were similar to those of the first one,this was found by

Pauling's electro negativity values for elements are useful in predicting

Which of the following does not represent the correct order of the properties indicated ?

In crystals of which of the following ionic compounds would you expect maximum distance between centres of cations and anions ?

In the periodic table from left to right in a period, the atomic volume

The fourteen elements from Ce to Lu are known as