S & P block & Transition Elements

Indicate the parameter, which effect atomic Radii in a period

• Number of shells

• Nuclear charge

• Shielding effect

• No. of orbitals

Periodic variation of atomic size in periodic table is similar to that off

• Ionic radii

• Ionization energy

• Electron Affinity

• Electronegativity

Select correct increasing order of atomic radius

• Ne > O > S > Al

• Ne < O > S > Al

• Ne < O < S < Al

• Ne > O < S > Al

Indicate incorrect order of atomic and ionic radii

• Na > Na+

• O-2 < O-1

• Cl- > Cl

• Ar > Cl

When an atom is ionized, the electron is removed from _______.

• Inner most shell

• Outermost shell

• Second last shell

• Any shell

With respect to 1st ionization energy, abnormal ionization energy trend are shown

by and elements of period 3

• Mg and Al

• Mg and S

• Al and S

• P and S

In any period of the periodic table, highest ionization energies are shown by

• Alkali metals

• Noble gases

• Halogens

• Alkali earth metals

Indicate correct set of variation of electron affinities in a period and group

respectively

• Increase and Decrease

• Increase and Increase

• Decrease and Decrease

• Decrease and Increase

Which of the following is correct definition of electronegativity

• Half of the distance b/w nuclei of bounded atoms

• Amount of energy required to remove electron

• Capability of an atom to attract shared electrons

• All of above correctly explains electronegativity

Most metallic element of group IA is

• Li

• Na

• K

• Rb