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
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
The electronic configuration of the atom having maximum difference in first and second ionisation energies 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
Which of the following orders of ionic radii is correct?
What are isoelectronic ions? Give examples.
Magnesium loses electrons successively to form Mg+, Mg2+ and Mg3+ ions. Which step will have the highest ionisation energy and why?
Why the first ionisation enthalpy of sodium is lower than that of magnesium while its second ionisation enthalpy is higher than that of magnesium?
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
Briefly give the basis for Pauling's scale of electronegativity.
