Question 8 of 44beginner🧠 RememberShort Answer3 marks

Write down the electronic configuration of:

(i)

Cr3+Cr^{3+}

Answer

[Ar] 3d³

(ii)

Pm3+Pm^{3+}

Answer

Information not provided in context

(iii)

Cu+Cu^{+}

Answer

[Ar] 3d¹⁰

(iv)

Ce4+Ce^{4+}

Answer

Information not provided in context

(v)

Co2+Co^{2+}

Answer

[Ar] 3d⁷

(vi)

Lu2+Lu^{2+}

Answer

Information not provided in context

(vii)

Mn2+Mn^{2+}

Answer

[Ar] 3d⁵

(viii)

Th4+Th^{4+}

Answer

[Rn] 5f⁰

Explanation

The provided context contains electronic configuration data for Transition Elements (Sc to Zn) and Actinoids (Ac to Md). For the transition metal ions (Cr³⁺, Cu⁺, Co²⁺, Mn²⁺) and the actinoid ion (Th⁴⁺), the configurations are derived directly from the respective tables. The context explicitly lists the configuration for Cr³⁺ as 3d³, Cu⁺ as 3d¹⁰, Co²⁺ as 3d⁷, Mn²⁺ as 3d⁵, and Th⁴⁺ as 5f⁰. However, the context does not contain data for the Lanthanoid series; therefore, the configurations for Pm³⁺, Ce⁴⁺, and Lu²⁺ cannot be determined from the given text.

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