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Introductory Chemistry: A Foundati...

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

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Chapter
Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

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

Do the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare to the mass of the electron? Which particles make the greatest contribution W the mass of an atom? Which particles make the greatest contribution to the chemical properties of an atom?

Interpretation Introduction

Interpretation:

If the proton and the neutron have the same mass should be determined. The mass of proton and the neutron should be compared. Particles that make the greatest contribution to the mass of an atom should be determined. Particles that make the greatest contribution to the chemical properties of an atom should be determined.

Concept Introduction:

The atomic symbol notation is as follows:

 Atomic number,  ZMass number,  AAtomic SymbolCharge,  +/

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

The charge of an ion is showed by + or − sign on the right-side super script.

The atoms of an element with different mass number or atomic mass are called isotopes.

Explanation

Proton:

  1. Protons are found in the nucleus of any elements.
  2. Protons have a positive electrical charge of one (+1).
  3. Proton is attracted to the electrons.
  4. Protons has a mass about the same as a neutron which ismp=1.672×1027 kg.

Neutrons:

  1. Neutrons are found in the nucleus of any elements.
  2. Neutrons have zero electrical charge (0).
  3. They are neutral in nature.
  4. Neutron has a mass about the same as a proton which ismn=1

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