(A) Isotopes are atoms of the same element that have the same atomic number (number of protons and electrons) but different mass numbers due to a diff

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The two oxygen atoms are isotopes

(A) Isotopes are atoms of the same element that have the same atomic number (number of protons and electrons) but different mass numbers due to a different number of neutrons in their nuclei.Since the two oxygen atoms in the sample have the same number of electrons (which defines the element as oxygen) but a different number of neutrons,they are isotopes of oxygen.Therefore,the correct reason is that the two oxygen atoms are isotopes.

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

Easy

In a sample of ethyl ethanoate $(CH_{3}COOC_{2}H_{5})$,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
The two oxygen atoms are isotopes
B
One of the oxygen atoms has gained electrons
C
One of the oxygen atoms has gained two neutrons
D
The two oxygen atoms are isobars

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Mix Example - STRUCTURE OF THE ATOM

Identify the isotopes out of $A, B, C$ and $D$ given the following representations:
${ }_{17}^{35} A, { }_{20}^{40} B, { }_{17}^{37} C, { }_{19}^{38} D$

Medium

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Given that a natural sample of iron $(Fe)$ has isotopes $_{26}^{54}Fe$,$_{26}^{56}Fe$,and $_{26}^{57}Fe$ in the ratios of $5\%$,$90\%$,and $5\%$ respectively. What will be the average atomic mass of iron $(Fe)$ (in $u$)?

Medium

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The number of electrons in an element $X$ is $15$ and the number of neutrons is $16$. Which of the following is the correct representation of the element?

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The ion of an element has $3$ positive charges. The mass number of the atom is $27$ and the number of neutrons is $14$. What is the number of electrons in the ion?

Medium

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$(a)$ Which popular experiment is shown in the figure?
$(b)$ List three observations of this experiment.
$(c)$ State conclusions drawn from each observation of this experiment.
$(d)$ State the model of atom suggested on the basis of the above experiment.

Medium

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In a sample of ethyl ethanoate $(CH_{3}COOC_{2}H_{5})$,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

Identify the isotopes out of $A, B, C$ and $D$ given the following representations:${ }_{17}^{35} A, { }_{20}^{40} B, { }_{17}^{37} C, { }_{19}^{38} D$

Given that a natural sample of iron $(Fe)$ has isotopes $_{26}^{54}Fe$,$_{26}^{56}Fe$,and $_{26}^{57}Fe$ in the ratios of $5\%$,$90\%$,and $5\%$ respectively. What will be the average atomic mass of iron $(Fe)$ (in $u$)?

The number of electrons in an element $X$ is $15$ and the number of neutrons is $16$. Which of the following is the correct representation of the element?

The ion of an element has $3$ positive charges. The mass number of the atom is $27$ and the number of neutrons is $14$. What is the number of electrons in the ion?

$(a)$ Which popular experiment is shown in the figure?$(b)$ List three observations of this experiment.$(c)$ State conclusions drawn from each observation of this experiment.$(d)$ State the model of atom suggested on the basis of the above experiment.

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Identify the isotopes out of $A, B, C$ and $D$ given the following representations:
${ }_{17}^{35} A, { }_{20}^{40} B, { }_{17}^{37} C, { }_{19}^{38} D$

$(a)$ Which popular experiment is shown in the figure?
$(b)$ List three observations of this experiment.
$(c)$ State conclusions drawn from each observation of this experiment.
$(d)$ State the model of atom suggested on the basis of the above experiment.