Chapter 25, Problem 52PS

### Chemistry & Chemical Reactivity

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

Chapter
Section

### Chemistry & Chemical Reactivity

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

# To synthesize the heavier transuranium elements, a nucleus must be bombarded with a relatively large particle. If you know the products are californium-246 and four neutrons, with what particle would you bombard uranium-238 atoms?

Interpretation Introduction

Interpretation:

The particle that is bombarded to Uranium–238 to form Californium–246 has to be determined.

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.

The Trans uranium elements are the chemical elements with atomic numbers greater than 92.All of these elements are unstable and decay radioactively in to other elements.

Explanation

The given unbalanced nuclear equation is,

U92238+?â†’C98246f+4n01

According to the law of conservation of atomic mass and number, the unknown element can be predicted.

The elemental symbol of the particle: ZAXÂ =â€‰Atomicâ€‰numberMassâ€‰numberX

Predict the unknown particle:

SumÂ ofÂ AtomicÂ numberÂ ofÂ ReactantÂ =Â Product92(U)+Â xÂ =â€‰â€‰â€‰98(Cf)+Â 0(neutron)xâ€‰=â€‰6

The unknown particle has atomic number 6

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