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The atomic number of an element is equal to the

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Important Questions on Structure of Atom

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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

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

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

The product obtained after a positron emission from

{}_{31}{Ga}^{68}

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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

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

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

From the following pairs of ions which one is not an iso-electronic pair?

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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

O^{2 -}

is isoelectronic with

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

In the following sets of ions, which one is not isoelectronic with the rest of the species?

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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

Which of the following elements you need to remove to form an isotone family ?

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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?

HARD

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 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

The number of protons, neutrons and electrons in

{}_{6}^{13}C

respectively are

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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 pair of atoms having the same number of neutrons 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?

The atomic number of an element is equal to the

Important Questions on Structure of Atom

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