Advertisements
Advertisements
Question
Identify the pairs which are not of isotopes?
(i) 126X, 136Y
(ii) 3517X, 3717Y
(iii) 146X, 147Y
(iv) 84X, 85Y
Solution
(iii) 146X, 147Y
(iv) 84X, 85Y
Explanation:
The isotopes are defined as atoms with identical atomic numbers but different mass numbers are known as isotopes.
APPEARS IN
RELATED QUESTIONS
Explain the Isotopes with example.
State whether the following statement is true or false :
Radioactive isotope of iodine is used for making the medicine called tincture iodine.
What is the reason for the slightly different physical properties of all the isotopes of an element ?
Hydrogen has three isotopes written as :
`""_1^1"H"` `""_1^2"H"` `""_1^3"H"`
Explain why :
(i) these isotopes have almost identical chemical properties.
(ii) they are electrically neutral.
(a) What are isotopes ? Explain by giving an example.
(b) Give one similarity and one difference between a pair of isotopes.
(c) Give the number of protons, neutrons and electrons per atom in the two isotopes of chlorine `""_17^35"Cl"` and `""_17^35"Cl"`.
Give one example of isotopes.
Four elements A, B, C, D are given :
- A shows the presence of 20 neutrons, 17 protons and 17 electrons.
- B shows the presence of 18 neutrons, 17 protons and 17 electrons.
- C shows the presence of 10 neutrons, 9 protons and 10 electrons.
- D shows the presence of 4 neutrons, 3 protons and 2 electrons.
State which of the above is –
- an anion
- a cation
- a pair of isotopes.
Write the formula of the compound formed between D and C.
Select the correct answer from the answer in the bracket to complete the sentence.
Isotopes have same _________.
Name the radioactive isotope used to find the age of fossils. Name the radioactive radiation which it emits?
In two isotopic species, a number of protons is the same but the number of ______ is different.
