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Three different atoms of oxygen are repr...

Three different atoms of oxygen are represented as :
`._(8)^(16)O,._(8)^(17)Oand._(8)^(18)O`
(i) What do the subscripts (lower figures) and supercripts (upper figures) represented ?
(ii) What factor is responsible for the change in the supercripts 16, 17 and 18, though the element is the same ?
(iii) What is the usual name for such atoms of an element ?
(iv) Give the nuclear composition of `._(8)^(18)O`.

Text Solution

Verified by Experts

The correct Answer is:
(i) Atomic number ; Mass numer (ii) No. of neutrons (iii) Isotopes (iv) Protons 8 ; Neutrons 10
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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
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  2. Which of the following pairs are isotopes ? Give reasons for your choi...

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  3. Three different atoms of oxygen are represented as : .(8)^(16)O,.(8)...

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  4. The atomic species A and B have different number of protons but the sa...

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  5. Composition of the nuclei of two atomic species A and B is given as un...

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  6. Which of the following pairs are isobars ? (i) .(26)^(58)A, .(28)^(5...

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  7. The number of protons, neutrons and electrons in particles A to E are ...

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  8. The composition of two atomic particles is given below : {:(,"X","Y"...

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  9. Four students (A),(B),(C) and (D) observed the colour and solubility o...

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  10. The white of an egg, common salt, sugar and fine sand are added to wat...

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  11. The correct procedure of heating iron-sulphur mixture to prepare iron ...

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  12. A student while heating solid lead nitrate taken in a test tube would ...

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  13. The following precautions were listed for the experiment on determinat...

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  14. The correct procedure for preparing a colloidal solution of egg albumi...

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  15. Four students (A), (B), (C) and (D) independently observed the evapora...

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  16. A student takes a mixture of sand and ammonium chloride in a china dis...

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  17. A student takes some water in a beaker and heats it over a flame for d...

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  18. Which of the following is the correct set of apparatus to separate com...

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  19. A student added the following substances to water kept in four separat...

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  20. In an experiment, carbon disulphide was added to a test-tube containin...

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