CBSE - Class 11 Chemistry Structure of Atom Worksheet
1.
(ii) Calculate the mass and charge of one mole of electrons.
2.
(i) Write the electronic configurations of the following ions: (b) Na$^+$
3.
Give the number of electrons in the species H$_2^+$, H$_2$ and O$_2^+$
4.
Explain, giving reasons, which of the following sets of quantum numbers are not possible. (e) $n$ = 3, $l$ = 3, $m_l$ = –3, $m_s$ = + $\frac{1}{2}$
5.
Arrange the following type of radiations in increasing order of frequency: (a) radiation from microwave oven (b) amber light from traffic signal (c) radiation from FM radio (d) cosmic rays from outer space and (e) X-rays.
6.
Write the complete symbol for the atom with the given atomic number ($Z$) and atomic mass ($A$) (ii) $Z$ = 92, $A$ = 233.
7.
A certain particle carries $2.5 \times 10^{-16}$C of static electric charge. Calculate the number of electrons present in it.
8.
(b) How many electrons will be present in the subshells having $m_s$ value of –1/2 for $n$ = 4 ?
9.
How much energy is required to ionise a H atom if the electron occupies $n$ = 5 orbit? Compare your answer with the ionization enthalpy of H atom (energy required to remove the electron from $n$ =1 orbit).
10.
Among the following pairs of orbitals which orbital will experience the larger effective nuclear charge? (i) 2s and 3s,
11.
Explain, giving reasons, which of the following sets of quantum numbers are not possible. (d) $n$ = 2, $l$ = 1, $m_l$ = 0, $m_s$ = – $\frac{1}{2}$
12.
In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is $–1.282 \times 10^{-18}$C, calculate the number of electrons present on it.
13.
Write the complete symbol for the atom with the given atomic number ($Z$) and atomic mass ($A$) (i) $Z$ = 17, $A$ = 35.
14.
(a) How many subshells are associated with $n$ = 4 ?
15.
Using s, p, d notations, describe the orbital with the following quantum numbers. (b) $n = 3; l=1$
16.
Yellow light emitted from a sodium lamp has a wavelength ($\lambda$) of 580 nm. Calculate the frequency ($\nu$) and wavenumber ($\overline{\nu}$) of the yellow light.
17.
A photon of wavelength $4 \times 10^{-7}$ m strikes on metal surface, the work function of the metal being 2.13 eV. Calculate (ii) the kinetic energy of the emission, (1 eV= $1.6020 \times 10^{-19}$ J).
18.
Explain, giving reasons, which of the following sets of quantum numbers are not possible. (c) $n$ = 1, $l$ = 1, $m_l$ = 0, $m_s$ = + $\frac{1}{2}$
19.
Write the complete symbol for the atom with the given atomic number ($Z$) and atomic mass ($A$) (iii) $Z$ = 4, $A$ = 9.
20.
(i) Write the electronic configurations of the following ions: (c) O$^{2-}$
