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

EASY

Earn 100

The electron is

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Important Questions on Nuclear Chemistry

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

In the radioactive disintegration series

_{90}^{232} T h \to_{82}^{208} P b,

involving

α

and

β

decay, the total number of

α

and

β

particles emitted are

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The fundamental particles present in the nucleus of an atom are

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Among the following, the correct statement about cathode ray discharge tube is

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The product obtained after a positron emission from

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

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Select the correct statements from the following :

A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is $9.10939 \times 10^{- 31} kg$ .
C. All the isotopes of a given element show same chemical properties.
D. Protons and electrons are collectively known as nucleons.
E. Dalton's atomic theory, regarded the atom as an ultimate particle of matter.

Choose the correct answer from the options given below:

HARD

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

A plot of the number of neutrons

(N)

against the number of protons

(P)

of the stable nuclei exhibits upwards deviation from linearity for atomic number,

Z > 20

. For an unstable nucleus having

\frac{N}{P}

ratio less than

1

, the possible mode(s) of decay is (are):

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Arrange the following particles in an increasing order of values of

e / m

ratio: electron

(e),

proton

(p),

neutron

(n)

and

α

-particle

(α) -

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

An element with mass number

181

contains

32 %

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

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Which of the following conclusions could not be derived from Rutherford's

α

-particle scattering experiment:

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Which of the following is the correct unit of angular momentum of an electron in an orbital of an atom ?

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

A nucleus

X

captures a

β

particle and then emits a neutron and

γ

ray to form

Y . X

and

Y

are:-

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The correct increasing order of the electronegativity is

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

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)

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

In the nuclear reaction

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

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The number of protons, neutrons and electrons in

_{71}^{175} Lu

, respectively, are

HARD

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

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?

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

Isotopes are

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

If the Thomson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been:

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The sum of the total number of neutrons present in protium, deuterium and tritium is

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Fundamental and Non-Fundamental Sub-Atomic Particles

The relation between the stopping potential

(V_{0})

and frequency

(v)

is correctly represented in [

ϕ =

Work function]

The electron is

Important Questions on Nuclear Chemistry

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