List of top Chemistry Questions on d -and f -Block Elements asked in Maharashtra Class XII

Amongst the following 3d-series elements, having highest value of first ionization enthalpy is ________.

The salt of \(Sc^{3+}\) ion is colourless and the salt of \(Mn^{3+}\) ion is coloured. Explain. [Z of Sc = 21 and Z of Mn = 25]

Write observed electronic configuration of chromium (Z = 24).

Calculate magnetic moment of \(Ti^{3+}\) by using spin only formula. (Z of Ti = 22)

Write two similarities and two differences between lanthanoids and actinoids.

Write the name of radioactive element in lanthanide series.

Value of magnetic moment of a divalent ion in aqueous solution having atomic number 25 will be 5.92 B.M. (True/False)

Zn, Cd and Hg generally are not considered as ________ elements.

Calculate spin only magnetic moment of M\(^{2+}\) ion. [atomic number of M = 26] Write condensed electronic configuration of Gadolinium [Z = 64].

Write the differences between lanthanoids and actinoids.

Distinguish between lanthanides and actinides.

Salts of Ti\(^{2+}\) are coloured. Give reason. Divalent cation of transition metal with atomic number 25.

What is lanthanoid contraction? Write preparation of acetic acid from dry ice and ethyl chloride.