Identify the incorrect statement among the following.

Question

Identify the incorrect statement among the following. (A) All f-block elements belong to 3 text rd group (B) Element curium ( Z =96) has 5 f 7 6 d 1 7 s 2 (C) The actinides tarnish readily in air (D) 4f and 5f-orbitals are equally buried

Tardigrade Admin · Accepted Answer

4 f electrons have greater shielding effect but 5 f electrons have poor shielding effect.

Q. Identify the incorrect statement among the following.

All f-block elements belong to $3^{rd}$ group

Element curium $(Z = 96)$ has $5 f^{7} 6 d^{1} 7 s^{2}$

The actinides tarnish readily in air

4f and 5f-orbitals are equally buried

$4 f$ electrons have greater shielding effect but $5 f$ electrons have poor shielding effect.

Q. Identify the incorrect statement among the following.

All f-block elements belong to 3rd group

Element curium (Z=96) has 5f76d17s2

The actinides tarnish readily in air

4f and 5f-orbitals are equally buried

4f electrons have greater shielding effect but 5f electrons have poor shielding effect.

All f-block elements belong to $3^{rd}$ group

Element curium $(Z = 96)$ has $5 f^{7} 6 d^{1} 7 s^{2}$

$4 f$ electrons have greater shielding effect but $5 f$ electrons have poor shielding effect.