Answer
Verified
408.9k+ views
Hint: The atom is denoted as \[_Z{O^A}\], where, A is the mass number of the atom and Z is the atomic number. Compare the given atom with \[_Z{O^A}\] to determine how many protons, neutrons and electrons are there in a single atom of \[_Z{O^A}\]. Calculate the number of atoms in 16g of \[_Z{O^A}\] and therefore, calculate the number of protons, neutrons and electrons in 16g of \[_Z{O^A}\].
Complete step-by-step answer:
We know that the atom is denoted as \[_Z{O^A}\]. Here, A is the mass number of the atom and Z is the atomic number. We know that the atomic number is the number of protons in the atom. We also know that the mass number is the sum of number of protons and number of neutrons.
Let us compare \[_8{O^{16}}\] with \[_Z{O^A}\]. We get, the mass number of the oxygen atom is 16 and the atomic number of the oxygen is 8. Therefore, we can say there are 8 protons in the oxygen atom. We know that, in the atom, there are equal protons and electrons. Therefore, the number of electrons in the oxygen atom is also 8.
Since the mass number is the sum of number of protons and number neutrons, we have,
\[16 = 8 + {\text{number of neutrons}}\]
\[ \Rightarrow {\text{Number of neutrons}} = 8\]
Therefore, in a single oxygen atom, there are 8 protons, 8 electrons and 8 neutrons.
Now, we have to calculate the number of atoms in the 16g of \[_8{O^{16}}\]. We know that the number of moles of the gas is the ratio of the given mass of the substance to its molar mass or mass number. Therefore, we have,
\[{\text{Number of moles}} = \dfrac{{16}}{{16}}\]
\[ \Rightarrow {\text{Number of moles}} = 1\]
We know that 1 mole of substance has a number of atoms equal to Avogadro’s number. Therefore, we have \[6.022 \times {10^{23}}\] number of atoms in 16g of \[_8{O^{16}}\].
Thus, the number of protons in the 16g of \[_8{O^{16}}\]is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
The number of electrons in the 16g of \[_8{O^{16}}\] is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
And, the number of neutrons in the 16g of \[_8{O^{16}}\] is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
Note: Students must note that the oxygen is always found in nature in diatomic form. Therefore, there are 2 atoms for the single oxygen molecule. Thus, the count of protons, neutrons and electrons would be double. Also, the number of electrons is always equal to the number of protons in the atom but the number of neutrons in the atom is not always equal to the number of protons.
Complete step-by-step answer:
We know that the atom is denoted as \[_Z{O^A}\]. Here, A is the mass number of the atom and Z is the atomic number. We know that the atomic number is the number of protons in the atom. We also know that the mass number is the sum of number of protons and number of neutrons.
Let us compare \[_8{O^{16}}\] with \[_Z{O^A}\]. We get, the mass number of the oxygen atom is 16 and the atomic number of the oxygen is 8. Therefore, we can say there are 8 protons in the oxygen atom. We know that, in the atom, there are equal protons and electrons. Therefore, the number of electrons in the oxygen atom is also 8.
Since the mass number is the sum of number of protons and number neutrons, we have,
\[16 = 8 + {\text{number of neutrons}}\]
\[ \Rightarrow {\text{Number of neutrons}} = 8\]
Therefore, in a single oxygen atom, there are 8 protons, 8 electrons and 8 neutrons.
Now, we have to calculate the number of atoms in the 16g of \[_8{O^{16}}\]. We know that the number of moles of the gas is the ratio of the given mass of the substance to its molar mass or mass number. Therefore, we have,
\[{\text{Number of moles}} = \dfrac{{16}}{{16}}\]
\[ \Rightarrow {\text{Number of moles}} = 1\]
We know that 1 mole of substance has a number of atoms equal to Avogadro’s number. Therefore, we have \[6.022 \times {10^{23}}\] number of atoms in 16g of \[_8{O^{16}}\].
Thus, the number of protons in the 16g of \[_8{O^{16}}\]is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
The number of electrons in the 16g of \[_8{O^{16}}\] is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
And, the number of neutrons in the 16g of \[_8{O^{16}}\] is,
\[8 \times 6.022 \times {10^{23}} = 4.82 \times {10^{24}}\]
Note: Students must note that the oxygen is always found in nature in diatomic form. Therefore, there are 2 atoms for the single oxygen molecule. Thus, the count of protons, neutrons and electrons would be double. Also, the number of electrons is always equal to the number of protons in the atom but the number of neutrons in the atom is not always equal to the number of protons.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE