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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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hen lithium salts are heated in a flame, they emit red light. When copper salts are heated in a flame in the same manner, they emit green light. Why do we know that lithium salts will never emit green light and copper salts will never emit red light?

Interpretation Introduction

Interpretation:

Why lithium and copper emit different colors of light when it is heated in a flame should be discussed.

Concept Introduction:

The presence of certain elements, mainly metal ions can be detected by flame test. During burning of elements, the electrons in the ground state of the element move to the higher energy level that is they get excited. These gas excitations produce a signature line emission spectrum for an element.

Explanation

The presence of certain elements, mainly metal ions can be detected by flame test. During burning of elements, the electrons in the ground state of the element move to the higher energy level that is they get excited. The energy is released by emitting light. The emitted energy is carried away by a photon. Thus the energy change experienced by the emitting atom corresponds exactly to the energy of the photon...

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