307572
Each hydrogen atom is excited by giving \(\mathrm{10.2 \mathrm{eV}}\). The maximum number of spectral lines in the emission is equal to
1 1
2 2
3 3
4 4
Explanation:
\(\mathrm{\mathrm{E}_{1}=-13.6 \mathrm{eV} /}\) atom; \(\mathrm{\mathrm{E}_{2}=-3.4 \mathrm{eV} /}\) atom . So, when \(\mathrm{10.2 \mathrm{eV}}\) energy is supplied, the electron is excited to \(\mathrm{2^{\text {nd }}}\) orbit. From \(\mathrm{2^{\text {nd }}}\) level to \(\mathrm{1^{\text {st }}}\) level, only one line is formed.
CHXI02:STRUCTURE OF ATOM
307552
Match Column I (Alkali Metal) with Column II (Emission Wavelength in nm). Column I Column II A Li P 589.2 B Na Q 455.5 C Rb R 670.8 D Cs S 780.0
The emission wavelengths (in nm ) are given below (A) Li - \({\mathrm{670.8(\mathrm{R})}}\) (B) \({\mathrm{\mathrm{Na}-589.2}}\) (P) (C) \({\mathrm{\mathrm{Rb}-780.0(\mathrm{~S})}}\) (D) \({\mathrm{\mathrm{Cs}-455.5(\mathrm{Q})}}\) So, the correct option is (3).
JEE Main - 2024
CHXI02:STRUCTURE OF ATOM
307553
Statement A : Absorption spectrum consists of some bright lines separated by dark spaces. Statement B : Emission spectrum consists of bright lines.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Absorption spectrum consists of dark lines separated by bright space and emission spectrum consists of bright lines.
CHXI02:STRUCTURE OF ATOM
307554
The line spectra of two elements are not identical because
1 The elements do not have the same number of neutrons.
2 They have different mass number.
3 Their outermost electrons are at different energy levels.
4 They have different valencies.
Explanation:
Every element has its own spectrum.Line spectra obtained when an electron emit radiation or energy while jumping from higher energy level to lower energy level after excitation. The amount of energy changes observed during excitationa nd de-excitation is not same for all elements. So, different elements have different line spectra.
CHXI02:STRUCTURE OF ATOM
307555
Assertion : Sodium chloride imparts a yellow colour to bunsen flame. Reason : Sodium has low ionization energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Sodium has low ionization energy. When heated, its electrons get excited to higher energy levels. And while returning back to the ground state. it emits radiation in the yellow region. So option (1) is correct.
307572
Each hydrogen atom is excited by giving \(\mathrm{10.2 \mathrm{eV}}\). The maximum number of spectral lines in the emission is equal to
1 1
2 2
3 3
4 4
Explanation:
\(\mathrm{\mathrm{E}_{1}=-13.6 \mathrm{eV} /}\) atom; \(\mathrm{\mathrm{E}_{2}=-3.4 \mathrm{eV} /}\) atom . So, when \(\mathrm{10.2 \mathrm{eV}}\) energy is supplied, the electron is excited to \(\mathrm{2^{\text {nd }}}\) orbit. From \(\mathrm{2^{\text {nd }}}\) level to \(\mathrm{1^{\text {st }}}\) level, only one line is formed.
CHXI02:STRUCTURE OF ATOM
307552
Match Column I (Alkali Metal) with Column II (Emission Wavelength in nm). Column I Column II A Li P 589.2 B Na Q 455.5 C Rb R 670.8 D Cs S 780.0
The emission wavelengths (in nm ) are given below (A) Li - \({\mathrm{670.8(\mathrm{R})}}\) (B) \({\mathrm{\mathrm{Na}-589.2}}\) (P) (C) \({\mathrm{\mathrm{Rb}-780.0(\mathrm{~S})}}\) (D) \({\mathrm{\mathrm{Cs}-455.5(\mathrm{Q})}}\) So, the correct option is (3).
JEE Main - 2024
CHXI02:STRUCTURE OF ATOM
307553
Statement A : Absorption spectrum consists of some bright lines separated by dark spaces. Statement B : Emission spectrum consists of bright lines.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Absorption spectrum consists of dark lines separated by bright space and emission spectrum consists of bright lines.
CHXI02:STRUCTURE OF ATOM
307554
The line spectra of two elements are not identical because
1 The elements do not have the same number of neutrons.
2 They have different mass number.
3 Their outermost electrons are at different energy levels.
4 They have different valencies.
Explanation:
Every element has its own spectrum.Line spectra obtained when an electron emit radiation or energy while jumping from higher energy level to lower energy level after excitation. The amount of energy changes observed during excitationa nd de-excitation is not same for all elements. So, different elements have different line spectra.
CHXI02:STRUCTURE OF ATOM
307555
Assertion : Sodium chloride imparts a yellow colour to bunsen flame. Reason : Sodium has low ionization energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Sodium has low ionization energy. When heated, its electrons get excited to higher energy levels. And while returning back to the ground state. it emits radiation in the yellow region. So option (1) is correct.
307572
Each hydrogen atom is excited by giving \(\mathrm{10.2 \mathrm{eV}}\). The maximum number of spectral lines in the emission is equal to
1 1
2 2
3 3
4 4
Explanation:
\(\mathrm{\mathrm{E}_{1}=-13.6 \mathrm{eV} /}\) atom; \(\mathrm{\mathrm{E}_{2}=-3.4 \mathrm{eV} /}\) atom . So, when \(\mathrm{10.2 \mathrm{eV}}\) energy is supplied, the electron is excited to \(\mathrm{2^{\text {nd }}}\) orbit. From \(\mathrm{2^{\text {nd }}}\) level to \(\mathrm{1^{\text {st }}}\) level, only one line is formed.
CHXI02:STRUCTURE OF ATOM
307552
Match Column I (Alkali Metal) with Column II (Emission Wavelength in nm). Column I Column II A Li P 589.2 B Na Q 455.5 C Rb R 670.8 D Cs S 780.0
The emission wavelengths (in nm ) are given below (A) Li - \({\mathrm{670.8(\mathrm{R})}}\) (B) \({\mathrm{\mathrm{Na}-589.2}}\) (P) (C) \({\mathrm{\mathrm{Rb}-780.0(\mathrm{~S})}}\) (D) \({\mathrm{\mathrm{Cs}-455.5(\mathrm{Q})}}\) So, the correct option is (3).
JEE Main - 2024
CHXI02:STRUCTURE OF ATOM
307553
Statement A : Absorption spectrum consists of some bright lines separated by dark spaces. Statement B : Emission spectrum consists of bright lines.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Absorption spectrum consists of dark lines separated by bright space and emission spectrum consists of bright lines.
CHXI02:STRUCTURE OF ATOM
307554
The line spectra of two elements are not identical because
1 The elements do not have the same number of neutrons.
2 They have different mass number.
3 Their outermost electrons are at different energy levels.
4 They have different valencies.
Explanation:
Every element has its own spectrum.Line spectra obtained when an electron emit radiation or energy while jumping from higher energy level to lower energy level after excitation. The amount of energy changes observed during excitationa nd de-excitation is not same for all elements. So, different elements have different line spectra.
CHXI02:STRUCTURE OF ATOM
307555
Assertion : Sodium chloride imparts a yellow colour to bunsen flame. Reason : Sodium has low ionization energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Sodium has low ionization energy. When heated, its electrons get excited to higher energy levels. And while returning back to the ground state. it emits radiation in the yellow region. So option (1) is correct.
307572
Each hydrogen atom is excited by giving \(\mathrm{10.2 \mathrm{eV}}\). The maximum number of spectral lines in the emission is equal to
1 1
2 2
3 3
4 4
Explanation:
\(\mathrm{\mathrm{E}_{1}=-13.6 \mathrm{eV} /}\) atom; \(\mathrm{\mathrm{E}_{2}=-3.4 \mathrm{eV} /}\) atom . So, when \(\mathrm{10.2 \mathrm{eV}}\) energy is supplied, the electron is excited to \(\mathrm{2^{\text {nd }}}\) orbit. From \(\mathrm{2^{\text {nd }}}\) level to \(\mathrm{1^{\text {st }}}\) level, only one line is formed.
CHXI02:STRUCTURE OF ATOM
307552
Match Column I (Alkali Metal) with Column II (Emission Wavelength in nm). Column I Column II A Li P 589.2 B Na Q 455.5 C Rb R 670.8 D Cs S 780.0
The emission wavelengths (in nm ) are given below (A) Li - \({\mathrm{670.8(\mathrm{R})}}\) (B) \({\mathrm{\mathrm{Na}-589.2}}\) (P) (C) \({\mathrm{\mathrm{Rb}-780.0(\mathrm{~S})}}\) (D) \({\mathrm{\mathrm{Cs}-455.5(\mathrm{Q})}}\) So, the correct option is (3).
JEE Main - 2024
CHXI02:STRUCTURE OF ATOM
307553
Statement A : Absorption spectrum consists of some bright lines separated by dark spaces. Statement B : Emission spectrum consists of bright lines.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Absorption spectrum consists of dark lines separated by bright space and emission spectrum consists of bright lines.
CHXI02:STRUCTURE OF ATOM
307554
The line spectra of two elements are not identical because
1 The elements do not have the same number of neutrons.
2 They have different mass number.
3 Their outermost electrons are at different energy levels.
4 They have different valencies.
Explanation:
Every element has its own spectrum.Line spectra obtained when an electron emit radiation or energy while jumping from higher energy level to lower energy level after excitation. The amount of energy changes observed during excitationa nd de-excitation is not same for all elements. So, different elements have different line spectra.
CHXI02:STRUCTURE OF ATOM
307555
Assertion : Sodium chloride imparts a yellow colour to bunsen flame. Reason : Sodium has low ionization energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Sodium has low ionization energy. When heated, its electrons get excited to higher energy levels. And while returning back to the ground state. it emits radiation in the yellow region. So option (1) is correct.
307572
Each hydrogen atom is excited by giving \(\mathrm{10.2 \mathrm{eV}}\). The maximum number of spectral lines in the emission is equal to
1 1
2 2
3 3
4 4
Explanation:
\(\mathrm{\mathrm{E}_{1}=-13.6 \mathrm{eV} /}\) atom; \(\mathrm{\mathrm{E}_{2}=-3.4 \mathrm{eV} /}\) atom . So, when \(\mathrm{10.2 \mathrm{eV}}\) energy is supplied, the electron is excited to \(\mathrm{2^{\text {nd }}}\) orbit. From \(\mathrm{2^{\text {nd }}}\) level to \(\mathrm{1^{\text {st }}}\) level, only one line is formed.
CHXI02:STRUCTURE OF ATOM
307552
Match Column I (Alkali Metal) with Column II (Emission Wavelength in nm). Column I Column II A Li P 589.2 B Na Q 455.5 C Rb R 670.8 D Cs S 780.0
The emission wavelengths (in nm ) are given below (A) Li - \({\mathrm{670.8(\mathrm{R})}}\) (B) \({\mathrm{\mathrm{Na}-589.2}}\) (P) (C) \({\mathrm{\mathrm{Rb}-780.0(\mathrm{~S})}}\) (D) \({\mathrm{\mathrm{Cs}-455.5(\mathrm{Q})}}\) So, the correct option is (3).
JEE Main - 2024
CHXI02:STRUCTURE OF ATOM
307553
Statement A : Absorption spectrum consists of some bright lines separated by dark spaces. Statement B : Emission spectrum consists of bright lines.
1 Statement A is correct but statement B is incorrect
2 Statement A is incorrect but statement B is correct
3 Both statements are correct
4 Both statements are incorrect
Explanation:
Absorption spectrum consists of dark lines separated by bright space and emission spectrum consists of bright lines.
CHXI02:STRUCTURE OF ATOM
307554
The line spectra of two elements are not identical because
1 The elements do not have the same number of neutrons.
2 They have different mass number.
3 Their outermost electrons are at different energy levels.
4 They have different valencies.
Explanation:
Every element has its own spectrum.Line spectra obtained when an electron emit radiation or energy while jumping from higher energy level to lower energy level after excitation. The amount of energy changes observed during excitationa nd de-excitation is not same for all elements. So, different elements have different line spectra.
CHXI02:STRUCTURE OF ATOM
307555
Assertion : Sodium chloride imparts a yellow colour to bunsen flame. Reason : Sodium has low ionization energy.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Sodium has low ionization energy. When heated, its electrons get excited to higher energy levels. And while returning back to the ground state. it emits radiation in the yellow region. So option (1) is correct.
