Choose the correct statement (s) about e...

Choose the correct statement (s) about electronic configuration of lanthanides:

all the tripositive ions of the series are of the form `4f^(n)` (n=1 to 14 with increasing atomic number)

E.C. of Gd `= [Xe] 4f^(7) 5d^(1) 6s^(2)`

E.C. of `Gd^(2+) = [Xe] 4f^(7) 5d^(1)`

E.C. of `Ce = [Xe] 4f^(1) 5d^(1)6s^(2)`

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The correct Answer is:

A, B, C, D

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Choose the correct statements(s):

In general more the ionisation energy more will be electronegativity.

Electronegativity increase means metallic character increases.

In general lower will be the ionisation energy, easier will be to remove electron.

Electron affinity of `S` is less than that of `CI`.

All the noble gases have completely filled `ns^(2)np^(6)` electronic configuration in their valance shell

First ionisation enthalpy of molecular oxygen (1170 kJ `mol^(-1)`) is almost identical with that of xenon (1175 kJ `mol^(-1)`)

Both `Xe^(+)PtF_(6)^(-)` and `O_(2)^(+)PtF_(6)^(-)`

None of the above

If pH `gt` isoelectric point amino acid will move towards cathode

At this point amino acid is present in the form of Zwitter ion

If pH `lt` isoelectric point, amino acid will move towards anode

Al this point amino acids are basic in nature