When the first ionization energies are placed against numbers, the peaks are occupied by 

Which has the greatest second ionization energy?

Which of the following periodic groups consists of entirely metals?

The process requiring absorption of energy is

Which of the following is the largest in atomic size?

Which pair of atomic number represents s-block elements?

Which of the following has the highest ionization energy in the whole periodic table?

The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to: