Ga shows irregular trend in its first ionization enthalpy due to which of the following : 1) poor shielding effect of 3rd electrons 2) poor shielding effect of 4th electrons 3)Large size of Ga as compared to Al 4)None of these

Ga shows irregular trend in its first ionization enthalpy due to which

1.	Ga shows irregular trend in its first ionization enthalpy due to which of the following : 1) poor shielding effect of 3rd electrons 2) poor shielding effect of 4th electrons 3)Large size of Ga as compared to Al 4)None of these
Answer» the RELATIVE DENSITY of LEAD is 11.3