Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 41

MEDIUM

JEE Main

IMPORTANT

Earn 100

Consider three electron jumps in $H$ -atom:

$X : n = 3 \to 1 Y : n = 4 \to 2 Z : n = 5 \to 3$

For which transition, the electron will experience the largest change in orbit radius?

60% studentsanswered this correctly

Important Questions on Structure of Atom

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 42

2 g

of hydrogen atoms are excited by radiation. The spectral study indicated that

25 %

of the atoms are in the third energy level,

20 %

atoms are in the second energy level and the rest in the ground state. What is the total energy evolved when the atoms return to the ground state?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 43

Which of the following elements contain non-spherical electron density?

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JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 44

The ratio of the velocity of

{SO}_{2}

molecules to the velocity of

O_{2}

molecules such that they are associated with de Broglie waves of the same wavelength is

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 45

The position of both an electron and a

He

atom is known within

1 nm

and the momentum of the electron is known within

50 \times 10^{- 26}

\frac{Kg m}{s}

. The minimum uncertainty in the measurement of the momentum of the

He

atom is:

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 46

The angular momentum of an electron in a particular orbit of a single-electron species is

3.17 \times 10^{- 34} kg m^{2} s^{- 1}

. The total number of possible unique values of

l

and

m

, respectively, are:

HARD

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 47

Suppose that the spin quantum number could have three possible values. Then, which of the following atomic number would not represent a noble gas?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 48

If the differentiating electron in an atom goes to the

4 p -

orbital, then the atomic number of the element is in the range of:

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 49

The energies

E_{1}

and

E_{2}

of two radiations are

25 eV

and

50 eV

, respectively. The relation between their wavelengths i.e.,

λ_{1}

and

λ_{2}

will be