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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

When a potassium atom becomes a monatomic ion, how many electrons does it lose or gain? What noble gas atom has the same number of electrons as a potassium ion?

Interpretation Introduction

Interpretation:

For the potassium atom, the potassium ion formation, the loss or gain of electrons to form ion, the noble gas atom having the same number of electrons are needed to be determined.

Concept introduction:

The loss or gain of electrons from an atom forms monoatomic ion in order to achieve the stability (noble gas electronic configuration, etc.).

Potassium has 19 electrons.

The charge of potassium ion (K+) is +1.

Explanation

The loss or gain of electrons from an atom forms monoatomic ion. Potassium atom is a group IA, so highly electropositive atom; therefore, they loss one electron to form ion.

Hence, potassium atom loss one electron so that they fulfil the octet rule or the noble gas electronic configuration.

Potassium has 19 electrons.

Potassium loss one electron to form potassium ion, the electronic configuration of K+

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