Advertisements
Advertisements
Questions
Give a reason
Physical properties of isotopes are different.
Give a reason for the following:
The physical properties of isotopes of the same element are not identical.
Advertisements
Solution
Physical properties depend on atomic mass, and isotopes have different mass number, i.e. they have different number of neutrons. So, isotopes have different physical properties.
RELATED QUESTIONS
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a non-metal.
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
Give electron dot diagram of the following:
nitrogen
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
Match the atomic numbers 4, 14, 8, 15 and 19 with each of the following:
- A solid non-metal of valency 3.
- A gas of valency 2.
- A metal of valency 1.
- A non-metal of valency 4.
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reduction.
Identify the following reaction as either oxidation or reduction:
K - e- → K+
An atom X with atomic number 20 combines with atom Y with atomic number 8. Draw the dot structure for the formation of the molecule XY.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
Elements A, B and C have atomic number 17, 19 and 10 respectively.
Write down the formula of the compound formed by two of the above elements.
