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General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343

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BuyFindarrow_forward

General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343
Textbook Problem

Two fourth-period atoms, one of a transition metal, M, and the other of a main-group nonmetal, X, form a compound with the formula M2X3. What is the electron configuration of atom X if M is Fe? What is the configuration of X if M is Co?

Interpretation Introduction

Interpretation:

The electronic configuration of atom X if M is Fe and the configuration of X if M is Co has to be written.

Concept introduction:

Electronic configuration:   The every atom has electron, proton and neutron

The electrons arranged in lower energy level to higher level

Every stable molecule having eight in its outer most shell is based on octet rule.

Outer most shell completely filled or half field shell or empty shells are more stable

The electron is filled in orbital lower energy is filled first then go for higher energy levels.

Explanation

If M is considered as Iron, the general formula given was M2X3 , then the compound has to be Fe2X3 .  Iron can form two types of ions, namely an ion with +2 oxidation state and an ion with +3 oxidation state.  Therefore, the element X has to have the ability to accept the electrons.  By considering this, the electronic configuration of element “X” can be written as [Ar]3d104s24p4

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