Question

For the following atoms, give the number of protons, neutrons, and electrons: $(4.4,4.5)$ a. ${ }_{80}^{202} \mathrm{Hg}$ b. ${ }_{53}^{127} \mathrm{I}$ c. ${ }_{35}^{75} \mathrm{Br}$ d. ${ }_{55}^{133} \mathrm{Cs}$ e. ${ }_{78}^{195} \mathrm{Pt}$

Name: Problem 70, Chapter 4: Basic Chemistry
Uploaded: 2022-02-24T02:08:42-08:00
Duration: 2 min 32 s
Channel: Derrick Danso
Description: For the following atoms, give the number of protons, neutrons, and electrons: (4.4,4.5) a. 80^202 Hg b. 53^127 I c. 35^75 Br d. 55^133 Cs e. 78^195 Pt

   For the following atoms, give the number of protons, neutrons, and electrons: $(4.4,4.5)$
a. ${ }_{80}^{202} \mathrm{Hg}$
b. ${ }_{53}^{127} \mathrm{I}$
c. ${ }_{35}^{75} \mathrm{Br}$
d. ${ }_{55}^{133} \mathrm{Cs}$
e. ${ }_{78}^{195} \mathrm{Pt}$

Basic Chemistry

Karen C. Timberlake,… 6th Edition

Chapter 4, Problem 70

Instant Answer

Solved by Expert Derrick Danso

02/24/2022

Step 1

${ }_{80}^{202} \mathrm{Hg}$ - Number of protons: 80 (the atomic number) - Number of neutrons: 202 - 80 = 122 (the mass number minus the atomic number) - Number of electrons: 80 (equal to the number of protons in a neutral atom) b. ${ }_{53}^{127} \mathrm{I}$ - Show more…

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For the following atoms, give the number of protons, neutrons, and electrons: $(4.4,4.5)$ a. ${ }_{80}^{202} \mathrm{Hg}$ b. ${ }_{53}^{127} \mathrm{I}$ c. ${ }_{35}^{75} \mathrm{Br}$ d. ${ }_{55}^{133} \mathrm{Cs}$ e. ${ }_{78}^{195} \mathrm{Pt}$

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Key Concepts

Atomic Number

The atomic number represents the number of protons in an atom’s nucleus. It is a unique identifier for each element and, in a neutral atom, is also equal to the number of electrons surrounding the nucleus.

Mass Number

The mass number is the total number of particles (protons and neutrons) in the nucleus. It is indicated as the superscript in the atomic notation and provides information about the overall mass of the atom.

Neutron Count

The number of neutrons in an atom is determined by subtracting the atomic number (protons) from the mass number. This calculation is essential for distinguishing different isotopes of the same element.

Neutral Atom Characteristics

In a neutral atom, the number of electrons exactly matches the number of protons. This balance ensures the atom has no overall electric charge.