For \({\text{N}}{{\text{a}}^{\text{ + }}}{\text{, e /m = }}\frac{{\text{e}}}{{{\text{23}}}}\) for \(\mathrm{\mathrm{Mg}^{+2}, \mathrm{e} / \mathrm{m}=\dfrac{2 \mathrm{e}}{24}}\), for \(\mathrm{\mathrm{Al}^{+3}, \mathrm{e} / \mathrm{m}=\dfrac{3 \mathrm{e}}{27}}\) for \(\mathrm{\mathrm{Si}^{+4}=\mathrm{e} / \mathrm{m}=\dfrac{4 \mathrm{e}}{28}}\)
CHXI02:STRUCTURE OF ATOM
307638
Consider the following statements I. The mass of a proton and a neutron are virtually same II. The charge of an electron and a proton are equal but has opposite sign III. The mass of the electrons is a significant fraction of the total mass of any atom
1 All are correct
2 I and II are correct but III is false
3 II and III are correct but I is false
4 I and III are correct but II is false
Explanation:
The mass of the electrons is not a significant fraction of the total mass of any atom.
CHXI02:STRUCTURE OF ATOM
307639
The lightest subatomic particle is
1 \({\rm{\alpha }}\)-particle
2 positron
3 proton
4 neutron
Explanation:
\(\alpha\)-particle have two neutrons and two protons. So, it is heaviest subatomic particle among all whereas, proton and neutron are of same weight as \(1.6727 \times 10^{-24} \mathrm{~g}\). While electron is of \(9.1 \times 10^{-28} \mathrm{~g}\) only and position has same weight of electron with positive charge, thus both are lightest subatomic particles
CHXI02:STRUCTURE OF ATOM
307640
Which of the following pairs have identical values of e/m ?
1 A proton and a neutron
2 A proton and deuterium
3 Deuterium and an \({\rm{\alpha }}\)-particle
4 An electron and \({\rm{\gamma }}\)-rays
Explanation:
Deuterium and an \({\rm{\alpha }}\)-particle have identical values of e/m.
For \({\text{N}}{{\text{a}}^{\text{ + }}}{\text{, e /m = }}\frac{{\text{e}}}{{{\text{23}}}}\) for \(\mathrm{\mathrm{Mg}^{+2}, \mathrm{e} / \mathrm{m}=\dfrac{2 \mathrm{e}}{24}}\), for \(\mathrm{\mathrm{Al}^{+3}, \mathrm{e} / \mathrm{m}=\dfrac{3 \mathrm{e}}{27}}\) for \(\mathrm{\mathrm{Si}^{+4}=\mathrm{e} / \mathrm{m}=\dfrac{4 \mathrm{e}}{28}}\)
CHXI02:STRUCTURE OF ATOM
307638
Consider the following statements I. The mass of a proton and a neutron are virtually same II. The charge of an electron and a proton are equal but has opposite sign III. The mass of the electrons is a significant fraction of the total mass of any atom
1 All are correct
2 I and II are correct but III is false
3 II and III are correct but I is false
4 I and III are correct but II is false
Explanation:
The mass of the electrons is not a significant fraction of the total mass of any atom.
CHXI02:STRUCTURE OF ATOM
307639
The lightest subatomic particle is
1 \({\rm{\alpha }}\)-particle
2 positron
3 proton
4 neutron
Explanation:
\(\alpha\)-particle have two neutrons and two protons. So, it is heaviest subatomic particle among all whereas, proton and neutron are of same weight as \(1.6727 \times 10^{-24} \mathrm{~g}\). While electron is of \(9.1 \times 10^{-28} \mathrm{~g}\) only and position has same weight of electron with positive charge, thus both are lightest subatomic particles
CHXI02:STRUCTURE OF ATOM
307640
Which of the following pairs have identical values of e/m ?
1 A proton and a neutron
2 A proton and deuterium
3 Deuterium and an \({\rm{\alpha }}\)-particle
4 An electron and \({\rm{\gamma }}\)-rays
Explanation:
Deuterium and an \({\rm{\alpha }}\)-particle have identical values of e/m.
For \({\text{N}}{{\text{a}}^{\text{ + }}}{\text{, e /m = }}\frac{{\text{e}}}{{{\text{23}}}}\) for \(\mathrm{\mathrm{Mg}^{+2}, \mathrm{e} / \mathrm{m}=\dfrac{2 \mathrm{e}}{24}}\), for \(\mathrm{\mathrm{Al}^{+3}, \mathrm{e} / \mathrm{m}=\dfrac{3 \mathrm{e}}{27}}\) for \(\mathrm{\mathrm{Si}^{+4}=\mathrm{e} / \mathrm{m}=\dfrac{4 \mathrm{e}}{28}}\)
CHXI02:STRUCTURE OF ATOM
307638
Consider the following statements I. The mass of a proton and a neutron are virtually same II. The charge of an electron and a proton are equal but has opposite sign III. The mass of the electrons is a significant fraction of the total mass of any atom
1 All are correct
2 I and II are correct but III is false
3 II and III are correct but I is false
4 I and III are correct but II is false
Explanation:
The mass of the electrons is not a significant fraction of the total mass of any atom.
CHXI02:STRUCTURE OF ATOM
307639
The lightest subatomic particle is
1 \({\rm{\alpha }}\)-particle
2 positron
3 proton
4 neutron
Explanation:
\(\alpha\)-particle have two neutrons and two protons. So, it is heaviest subatomic particle among all whereas, proton and neutron are of same weight as \(1.6727 \times 10^{-24} \mathrm{~g}\). While electron is of \(9.1 \times 10^{-28} \mathrm{~g}\) only and position has same weight of electron with positive charge, thus both are lightest subatomic particles
CHXI02:STRUCTURE OF ATOM
307640
Which of the following pairs have identical values of e/m ?
1 A proton and a neutron
2 A proton and deuterium
3 Deuterium and an \({\rm{\alpha }}\)-particle
4 An electron and \({\rm{\gamma }}\)-rays
Explanation:
Deuterium and an \({\rm{\alpha }}\)-particle have identical values of e/m.
For \({\text{N}}{{\text{a}}^{\text{ + }}}{\text{, e /m = }}\frac{{\text{e}}}{{{\text{23}}}}\) for \(\mathrm{\mathrm{Mg}^{+2}, \mathrm{e} / \mathrm{m}=\dfrac{2 \mathrm{e}}{24}}\), for \(\mathrm{\mathrm{Al}^{+3}, \mathrm{e} / \mathrm{m}=\dfrac{3 \mathrm{e}}{27}}\) for \(\mathrm{\mathrm{Si}^{+4}=\mathrm{e} / \mathrm{m}=\dfrac{4 \mathrm{e}}{28}}\)
CHXI02:STRUCTURE OF ATOM
307638
Consider the following statements I. The mass of a proton and a neutron are virtually same II. The charge of an electron and a proton are equal but has opposite sign III. The mass of the electrons is a significant fraction of the total mass of any atom
1 All are correct
2 I and II are correct but III is false
3 II and III are correct but I is false
4 I and III are correct but II is false
Explanation:
The mass of the electrons is not a significant fraction of the total mass of any atom.
CHXI02:STRUCTURE OF ATOM
307639
The lightest subatomic particle is
1 \({\rm{\alpha }}\)-particle
2 positron
3 proton
4 neutron
Explanation:
\(\alpha\)-particle have two neutrons and two protons. So, it is heaviest subatomic particle among all whereas, proton and neutron are of same weight as \(1.6727 \times 10^{-24} \mathrm{~g}\). While electron is of \(9.1 \times 10^{-28} \mathrm{~g}\) only and position has same weight of electron with positive charge, thus both are lightest subatomic particles
CHXI02:STRUCTURE OF ATOM
307640
Which of the following pairs have identical values of e/m ?
1 A proton and a neutron
2 A proton and deuterium
3 Deuterium and an \({\rm{\alpha }}\)-particle
4 An electron and \({\rm{\gamma }}\)-rays
Explanation:
Deuterium and an \({\rm{\alpha }}\)-particle have identical values of e/m.