Advertisements
Advertisements
प्रश्न
What is the effective nuclear charge?
Advertisements
उत्तर
The net nuclear charge experienced by valence electrons in the outermost shell is called the effective nuclear charge.
Zeff = Z – S
Where Z = Atomic number
S = Screening constant calculated by using Slater’s rules.
APPEARS IN
संबंधित प्रश्न
Which of the following elements will have the highest electronegativity?
Various successive ionisation enthalpies (in kJ mol-1) of an element are given below.
| IE1 | IE2 | IE3 | IE4 | IE5 |
| 577.5 | 1,810 | 2,750 | 11,580 | 14,820 |
The element is
Which one of the following is the least electronegative element?
The element with positive electron gain enthalpy is
Assertion: Helium has the highest value of ionisation energy among all the elements known
Reason: Helium has the highest value of electron affinity among all the elements known
How does electron affinity change when we move from left to right in a period in the periodic table?
How would you explain the fact that the second ionisation potential is always higher than the first ionisation potential?
Explain the periodic trend of ionisation potential.
By using Pauling's method calculate the ionic radii of K+ and Cl− ions in the potassium chloride crystal. Given that `"d"_("K"^+) - "Cl"^-` = 3.14 Å
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.
