CameraIcon

SearchIcon

MyQuestionIcon

189

You visited us 189 times! Enjoying our articles? Unlock Full Access!

Magnetic Properties

First IE of 5...

Question

First IE of 5d-elements are higher than those of 3d and 4d-elements. This is due to

A

lesser effective nuclear charge is experienced because of the weak shielding of the nucleus by 4f-electrons

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

greater effective nuclear charge is experienced because of the weak shielding of the nucleus by 4f-electrons

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

both (A) and (B)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

none of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B greater effective nuclear charge is experienced because of the weak shielding of the nucleus by 4f-electrons
5d elements have almost the same radius as that of 4d due to lanthanide contraction but they experienced greater effective nuclear charge because of the weak shielding of the nucleus by 4f-electrons so they have higher IE.

Suggest Corrections

thumbs-up

0

Similar questions

Q. The first ionization enthalpies of 5d elements is higher than that of the corresponding 3d and 4d elements. This is best explained by:

Q. The nuclear charge actually experienced by an electron is termed as the effective nuclear charge. The effective nuclear charge Z* actually depends on the type of shell and orbital in which electron is actually present. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is

s > p > d > f

(for the same value of

n

)
The phenomenon in which penultimate shell electrons act as screen or shield in between nucleus and valence shell electrons and thereby reducing nuclear charge is known as shielding effect. The penultimate shell electrons repel the valence shell electron to keep them loosely held with the nucleus. It is thus evident that more is the shielding effect, lesser is the effective nuclear charge and lesser is the ionization energy.
Ionization energy is not influenced by :

Q. Due to inter electronic repulsion, an electron experiences less nuclear charge. It is, therefore, said that inner electronic shells electrons shield the nucleus. The actual nuclear charge experienced by an electron is called effective nuclear charge. If the electrons in K-shell shields the nucleus to the extent of 0.5 (say) each. What will be the wave number of the spectral line arising out of n=4 to n = 2 transition in He atom?

How to calculate effective nuclear charge and shielding constant for d and f block elements

Please explain with example

Q. Nuclear charge refers to the effective positive charge of a nucleus. The nuclear charge of carbon is .

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Magnetic Properties

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Magnetic Properties

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon