Advertisements
Advertisements
Question
In a given shell the order of screening effect is
Options
s > p > d > f
s > p > f > d
f > d > p > s
f > p > s > d
Advertisements
Solution
s > p > d > f
APPEARS IN
RELATED QUESTIONS
Which one of the following is the least electronegative element?
The element with positive electron gain enthalpy is
IE1 and IE2 of Mg are 179 and 348 kcal mol−1 respectively. The energy required for the reaction \[\ce{Mg -> Mg^2+ + 2e^-}\] is
Energy of an electron in the ground state of the hydrogen atom is −2.18 × 10−18 J. Calculate the ionisation enthalpy of atomic hydrogen in terms of kJ mol−1.
Explain the Pauling method for the determination of ionic radius.
Explain the following, give an appropriate reason.
First ionisation potential of the C-atom is greater than that of the B atom, whereas the reverse is true is for the second ionisation potential.
Explain the following, give an appropriate reason.
The electron affinity values of Be and Mg are almost zero and those of N (0.02 eV) and P (0.80 eV) are very low.
Explain the following, give an appropriate reason.
The formation of \[\ce{F^-_{(g)}}\] from \[\ce{F_{(g)}}\] is exothermic while that of \[\ce{O^2-_{(g)}}\] from \[\ce{O_{(g)}}\] is endothermic.
Briefly give the basis for Pauling's scale of electronegativity.
State the trends in the variation of electronegativity in groups and periods.
