Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

EASY

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Which of the following statements is wrong about anode rays?

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Important Questions on Structure of Atom

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The isoelectronic set of ions is:

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

Which of the following pairs of ions is isoelectronic and isostructural?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

Match List $‐ I$ (Experiment performed) with List $‐ II$ (Phenomena discovered/associated)and select the correct option from the options given below the lists

	List-I		List-II
$(a)$	Davisson and Germer experiment	$(i)$	Wave nature of electrons
$(b)$	Millikan's oil drop experiment	$(ii)$	Charge of an electron
$(c)$	Rutherford experiment	$(iii)$	Quantisation of energy levels
$(d)$	Franck-Hertz experiment	$(iv)$	Existence of the nucleus

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The number of protons, neutrons and electrons in

_{71}^{175} Lu

, respectively, are

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The number of times the comparative mass of a neutron is heavier than an electron is:

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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)

is

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

Among the following species which option contains all isoelectronic species?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The correct set of four quantum numbers for the valence electrons of rubidium atom

(Z = 37)

is

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

Which of the following are isoelectronic species?

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

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

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

IV. ${NH}_{3}$

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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>Structure of Atom>Cathode Rays and Positive Rays

Isotopes are

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

B e^{2 +}

is isoelectronic with which of the following ions?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The number of protons, neutrons and electrons in

{}_{6}^{13}C

respectively are

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

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

EASY

Chemistry>Physical Chemistry>Structure of Atom>Cathode Rays and Positive Rays

The fundamental particles present in the nucleus of an atom are