(C) Isotopes are atoms of the same element that have the same atomic number (number of protons and electrons) but different mass numbers.The differenc

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The two oxygen atoms are isotopes

(C) Isotopes are atoms of the same element that have the same atomic number (number of protons and electrons) but different mass numbers.The difference in mass number arises because isotopes have a different number of neutrons in their nuclei.Since oxygen atoms in a sample can exist as different isotopes (e.g.,$^{16}O$,$^{17}O$,or $^{18}O$),they will have the same number of electrons but a different number of neutrons.

Class 9 Science STRUCTURE OF THE ATOM Mix Example - STRUCTURE OF THE ATOM

Easy

In a sample of ethyl ethanoate $(CH_3COOC_2H_5)$,the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

A
One of the oxygen atoms has gained electrons
B
One of the oxygen atoms has gained two neutrons
C
The two oxygen atoms are isotopes
D
The two oxygen atoms are isobars

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Mix Example - STRUCTURE OF THE ATOM

Sulphur dioxide $(SO_{2})$ is a colourless,pungent-smelling gas and is a major air pollutant.
$(a)$ Write the electronic configuration of its constituent elements,sulphur and oxygen.
(Given: $_{16}^{32}S, _{8}^{16}O)$
$(b)$ Write the valency of sulphur and oxygen.
$(c)$ Are sulphur and oxygen isotopes of the same element? Explain your answer.

Medium

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State whether the following statement is true or false:
The relative number and kinds of atoms are varying in a given compound.

Easy

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Find out the valency of the atoms represented by the Fig. $(a)$ and $(b)$.

Easy

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Give a brief account of the development of the presently accepted model of the atom with the contributions made by different scientists. Write two features of this atomic model.

Medium

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Give reasons for the following:
$(a)$ Ions are more stable than atoms.
$(b)$ Noble gases show low reactivity.

Medium

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In a sample of ethyl ethanoate $(CH_3COOC_2H_5)$,the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

Similar Questions

State whether the following statement is true or false:The relative number and kinds of atoms are varying in a given compound.

Find out the valency of the atoms represented by the Fig. $(a)$ and $(b)$.

Give a brief account of the development of the presently accepted model of the atom with the contributions made by different scientists. Write two features of this atomic model.

Give reasons for the following:$(a)$ Ions are more stable than atoms.$(b)$ Noble gases show low reactivity.

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Online Exam Module

State whether the following statement is true or false:
The relative number and kinds of atoms are varying in a given compound.

Give reasons for the following:
$(a)$ Ions are more stable than atoms.
$(b)$ Noble gases show low reactivity.