   Chapter 2, Problem 101GQ

Chapter
Section
Textbook Problem

Fill in the blanks in the table (one column per element). Interpretation Introduction

Interpretation:

The given table of four elements with their symbols, number of protons, neutrons and electrons are needed to be completed.

Concept introduction:

• The atomic number of nickel, sulfur, neon and manganese are 58, 33, 10 and 25 respectively.
• The atomic number, number of protons and number of electrons are equal for an atom.
• Equation for mass number is,

massnumber=numberofprotons+numberofneutrons

• The complete symbol for an atom include mass number and atomic number in such a way that,

XatomicnumberZmassnumberAElementsymbol

Explanation

For the symbol 58Ni, the element is nickel, so the atomic number is 28, then the number of protons and elections are 28. The mass number of nickel is given that 58.

Equation for finding mass number is,

massnumber=numberofprotons+numberofneutrons

Therefore,

The number of neutrons is 5828=30

For the symbol 33S, the element is sulfur, so the atomic number is 16, then the number of protons and elections are 16. The mass number of nickel is given that 33.

Equation for finding mass number is,

massnumber=numberofprotons

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