Answer
417.9k+ views
Hint: Deuterium isotope is an isotope of hydrogen with relatively low abundance. It has a mass number of two. We can get the number of neutrons by subtracting the atomic number from the mass number, since the sum of neutrons and protons is equal to the mass number.
Formulas used: Number of neutrons $ = A - Z$
Where $A$ is the mass number and $Z$ is the atomic number.
Complete step by step answer:
Isotopes are atoms of the same element which have different mass numbers. That is, they have the same atomic number but different atomic mass.
As we know, mass number is the sum of neutrons and protons in an atom. And since the number of protons is also equal to the atomic number, we can say that the sum of atomic number and the number of neutrons is equal to the mass number. In other words, the number of neutrons in an atom is the difference between the mass number and the atomic number.
Number of neutrons $ = A - Z$
Where $A$ is the mass number and $Z$ is the atomic number.
As deuterium is the second isotope of hydrogen, it has a mass number of $A = 2$. And since it is an isotope of hydrogen, its atomic number is the atomic number of hydrogen, which is equal to $Z = 1$.
Hence, the number of neutrons in deuterium $ = 2 - 1 = 1$
So, the correct answer is Option D.
Note: Hydrogen has three isotopes, namely protium, with a mass number of $1$, deuterium, with a mass number of $2$ and tritium, which has a mass number of $3$. Out of these, protium is the most abundant and is what we actually refer to when we say hydrogen. Note that two atoms of deuterium can combine with an oxygen molecule to form a compound known as heavy water, having the molecular formula ${D_2}O$.
Formulas used: Number of neutrons $ = A - Z$
Where $A$ is the mass number and $Z$ is the atomic number.
Complete step by step answer:
Isotopes are atoms of the same element which have different mass numbers. That is, they have the same atomic number but different atomic mass.
As we know, mass number is the sum of neutrons and protons in an atom. And since the number of protons is also equal to the atomic number, we can say that the sum of atomic number and the number of neutrons is equal to the mass number. In other words, the number of neutrons in an atom is the difference between the mass number and the atomic number.
Number of neutrons $ = A - Z$
Where $A$ is the mass number and $Z$ is the atomic number.
As deuterium is the second isotope of hydrogen, it has a mass number of $A = 2$. And since it is an isotope of hydrogen, its atomic number is the atomic number of hydrogen, which is equal to $Z = 1$.
Hence, the number of neutrons in deuterium $ = 2 - 1 = 1$
So, the correct answer is Option D.
Note: Hydrogen has three isotopes, namely protium, with a mass number of $1$, deuterium, with a mass number of $2$ and tritium, which has a mass number of $3$. Out of these, protium is the most abundant and is what we actually refer to when we say hydrogen. Note that two atoms of deuterium can combine with an oxygen molecule to form a compound known as heavy water, having the molecular formula ${D_2}O$.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)