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Chemistry & Chemical Reactivity

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

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Uranium-235 is an alpha emitter. Write an equation for the nuclear decay process.

Interpretation Introduction

Interpretation:

An equation for the alpha emitter nuclear decay process for uranium-235 has to be written.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

  • The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
  • The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.
Explanation

Uranium-238 produces thorium-234 by alpha decay.

An alpha particle is a helium nucleus. It contains two protons and two neutrons, for a mass number of 4.

During alpha- decay, an atomic nucleus emits alpha particle. It transforms in to an atom with atomic number is less by two units and a mass number less by four units.

Hence the alpha decay process is,

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