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While the most common isotope of nitrogen has a mass number of
(a)
Interpretation: The number of protons in nitrogen-
Concept introduction: Isotopes of a particular element have different number of neutrons. The mass number of an atom is the total number of protons and neutrons in the nucleus. In a neutral atom, number of protons in a nucleus is equal to the number of electrons.
Answer to Problem 1.1P
The number of protons in nitrogen-
Explanation of Solution
Atomic number of nitrogen is
The number of protons in nitrogen-
(b)
Interpretation: The number of protons in nitrogen-
Concept introduction: Isotopes of a particular element have different number of neutrons. The mass number of an atom is the total number of protons and neutrons in the nucleus. In a neutral atom, number of protons in a nucleus is equal to the number of electrons.
Answer to Problem 1.1P
The number of neutrons in nitrogen-
Explanation of Solution
Number of neutrons is calculated by the formula,
The number of protons in nitrogen-
Substitute the value of number of protons in nitrogen-
Hence, the number of neutrons is nitrogen-
The number of protons in nitrogen-
Substitute the value of number of protons and mass number in the above formula.
Hence, the number of neutrons is nitrogen-14 is
The number of neutrons in nitrogen-
(c)
Interpretation: The number of electrons in the neutral atom is to be predicted.
Concept introduction: Isotopes of a particular element have different number of neutrons. The mass number of an atom is the total number of protons and neutrons in the nucleus. In a neutral atom, number of protons in a nucleus is equal to the number of electrons.
Answer to Problem 1.1P
The number of electrons in the neutral atom is 7.
Explanation of Solution
Atomic number of nitrogen is
The number of electrons in neutral atom is 7.
(d)
Interpretation: The group number of Nitrogen atom is to be predicted.
Concept introduction: Isotopes of a particular element have different number of neutrons. The mass number of an atom is the total number of protons and neutrons in the nucleus. In a neutral atom, number of protons in a nucleus is equal to the number of electrons.
Answer to Problem 1.1P
The group number of Nitrogen atom is
Explanation of Solution
In the periodic table of elements, each column is identified by a group number, Arabic
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Chapter 1 Solutions
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