atoms of same elements having different mass number

atoms of different elements having same mass number

atoms of same elements having same mass number

atoms of different elements having same number of neutrons

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The atomic number of an element is always equal to

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Important Questions on Structure of Atom

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The pair of atoms having the same number of neutrons is

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

A dinegative ion of the element

X

consists of

10

electrons and 8 neutrons. A dipositive ion of the element

Y

consists of

12

protons. The number of neutrons in

Y

1.5

times the number of electrons in atom

X

. Then the mass numbers of

X

and

Y

would be in the ratio

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Among the following species which option contains all isoelectronic species?

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The number of electrons, protons and neutrons in a species are equal to

10, 11

and

12

respectively. The proper symbol-of the species is

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The number of protons, neutrons and electrons in

_{71}^{175} Lu

, respectively, are

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Among the following, the set of isoelectronic ions is

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Which of the following pairs of iron are isoelectronic and isostructural?

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Hydrogen has three isotopes

(A), (B)

and

(C) .

If the number of neutron(s) in

(A), (B)

and

(C)

respectively, are

(x), (y)

and

(z),

the sum of

(x), (y)

and

(z)

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

In the nuclear reaction

{}_{13}{Al}^{27} + {}_{2}{He}^{4} ⟶ {}_{14}X^{30} + {}_{1}H^{1}, X

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The masses of an electron, a proton and a neutron respectively will be in the ratio

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

O^{2 -}

is isoelectronic with

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Consider a hypothetical case in which the charge of a proton is twice as that of an electron. Using this hypothetical case, how many protons

(P),

neutrons

(N)

and electrons

(E)

would a neutral

{}^{23}{Na}

atom contain?

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The isoelectronic set of ions is:

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The isoelectronic pair is:

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

B e^{2 +}

is isoelectronic with which of the following ions?

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Isotopes are

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Which of the following are isoelectronic species?

I. $\overset{+}{C} H_{3}$

II. ${NH}_{2}^{-}$

III. ${NH}_{4}^{+}$

IV. ${NH}_{3}$

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The introduction of a neutron into the nucleus of an atom would lead to a change in

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

The nitride ion in lithium nitride is composed of

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Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

An element with mass number

181

contains

32 %

more neutrons as compared to protons. What is the symbol of that element?

The atomic number of an element is always equal to

Important Questions on Structure of Atom

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