a)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the
a)
Answer to Problem 49A
The number of protons in Phosphorus (P) is 15.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Phosphorous is 15, the number of protons will also be 15.
b)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the atomic number of the element.
b)
Answer to Problem 49A
The number of protons in Molybdenum (Mo) is 42.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Molybdenum is 42, the number of protons will also be 42.
c)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the atomic number of the element.
c)
Answer to Problem 49A
The number of protons in Aluminium (Al) is 13.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Aluminium is 13, the number of protons will also be 13.
d)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the atomic number of the element.
d)
Answer to Problem 49A
The number of protons in Cadmium (Cd) is 48.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Cadmium is 48, the number of protons will also be 48.
e)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the atomic number of the element.
e)
Answer to Problem 49A
The number of protons in Chromium (Cr) is 24.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Chromium is 24, the number of protons will also be 24.
f)
Interpretation : The number of protons in the nuclei of the following atoms is to be calculated.
Concept Introduction : Protons are present in the nucleus of an atom and have a positive charge. They also denote the atomic number of the element.
f)
Answer to Problem 49A
The number of protons in Lead (Pb) is 82.
Explanation of Solution
The count of protons present in the nucleus of the atom gives the atomic number (Z).
The number of protons, number of electrons, and atomic number are always equal for a given element.
The atomic number is given as:
Since the atomic number of Lead is 82, the number of protons will also be 82.
Chapter 4 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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