Which of the following elements during ionization to form positive ion the electron is removed from spherical orbital ?
A) Zn
B) Cl
C) Al
D) Pd

Which among the following elements will have a positive electron gain enthalpy ? B, C, N, O.

Which of the following pairs of elements would have a more negative electron gain enthalpy? a. O or F , b. F or Cl

Which of the following elements differs from the rest in several physical and chemical properties? (a)Li (b)Na (c)Rb (d)Cs

Which of the following match is/are correct regarding B, Al, C and S elements?

Which of the following elements will gain one electron more readily comparison to other elements of their groups? a) S(g) B) Na(g) C) O(g) D) CI(g)

During change of O_(2) to O_(2)^(2-) ion, the electrons add on which of the following orbitals ?

During change of O_(2) to O_(2)^(2-) ion, the electrons add on which of the following orbitals ?

In stratosphere , which of the following element acts as a catalyst in degradation of ozone an release of molecular oxygen ? (A) Oxygen (B) Fe (C) Cl (D) Carbon

One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell?

Number of the following elements which are p-block elements Pb, Al, B,K,S,Cd, Zn,Th,Sr