Concept explainers
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(a)
Interpretation: Symbol and number of protons, neutrons, and electrons in given atom needs to be determined.
Concept introduction: A notation to describe a substance that uses an atomic symbol and a numerical subscript to indicate the relative numbers of atoms (different elements in the substance) is defined as a chemical formula.
(a)
Answer to Problem 4RQ
The symbol is
The number of Protons in Cu is
The number of Electrons in Cu is
The number of Neutrons in Cu is
Explanation of Solution
Chemical formula is a short hand way to use chemical symbol as well as numbers to represent a substance. The symbol of copper is Cu.
Protons are defined as a positively charged
Electron are negatively charged subatomic particles found orbiting the nucleus of an atom. Number of Electron are equals to number of protons. the number of Protons in Cu is
Neutrons are subatomic particles found in the nucleus of an atom which are neutral. Formula to solve number of neutrons:
Mass number
According to this, the element symbol is
In this, Number of Neutrons
(b)
Interpretation: Symbol and number of protons, neutrons, and electrons in given atom needs to be determined.
Concept introduction: A notation to describe a substance that uses an atomic symbol and a numerical subscript to indicate the relative numbers of atoms (different elements in the substance) is defined as a chemical formula.
(b)
Answer to Problem 4RQ
The symbol is
The number of Protons in Ca is
The number of Electrons in Ca is
The number of Neutrons in Ca is
Explanation of Solution
Chemical formula is a short hand way to use chemical symbol as well as numbers to represent a substance. The symbol of Calcium is Ca.
Protons are defined as a positively charged
Electron are negatively charged subatomic particles found orbiting the nucleus of an atom. Number of Electron are equals to number of protons. the number of Protons in Ca is
Neutrons are subatomic particles found in the nucleus of an atom which are neutral. Formula to solve number of neutrons:
Mass number
According to this, the element symbol is
In this, Number of Neutrons
(c)
Interpretation: Symbol and number of protons, neutrons, and electrons in given atom needs to be determined.
Concept introduction: A notation to describe a substance that uses an atomic symbol and a numerical subscript to indicate the relative numbers of atoms (different elements in the substance) is defined as a chemical formula.
(c)
Answer to Problem 4RQ
The symbol is
The number of Protons in Mg is
The number of Electrons in Mg is
The number of Neutrons in Mg is
Explanation of Solution
Chemical formula is a short hand way to use chemical symbol as well as numbers to represent a substance. The symbol of Magnesium is Mg.
Protons are defined as a positively charged
Electron are negatively charged subatomic particles found orbiting the nucleus of an atom. Number of Electron are equals to number of protons. the number of Protons in Mg is
Neutrons are subatomic particles found in the nucleus of an atom which are neutral. Formula to solve number of neutrons:
Mass number
According to this, the element symbol is
In this, Number of Neutrons
Chapter 3 Solutions
World of Chemistry, 3rd edition
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