Welcome to your Chemistry Set - 2
1.
Which of the following is not permissible arrangement of electrons in an atom?
2.
Maximum number of electrons in a subshell of an atom is determined by the following
3.
Consider the following sets of quantum numbers. n l m s (i) 3 0 0 +1/2 (ii) 2 2 1 +1/2 (iii) 4 3 −2 −1/2 (iv) 1 0 −1 −1/2 (v) 3 2 3 +1/2 Which of the following sets of quantum numbers is not possible?
4.
The orientation of an atomic orbital is governed by
5.
The following quantum numbers are possible for how many orbital(s): n = 3, l = 2 and m = +2?
6.
Which of the following configuration is correct for iron?
7.
The electronic configuration of gadolinium (at. no. = 64) is
8.
The orbitals are called degenerate when
9.
If an electron has spin quantum number +1/2 and magnetic quantum number -1, it cannot be present in
10.
For which one of the following sets of four quantum numbers, an electron will have the highest energy?
11.
Electronic configuration of calcium atom can be written as
12.
The electronic configuration of Cu (at. no. 29) is
13.
The order of filling of electrons in the orbitals of an atom will be
14.
For azimuthal quantum number l = 3, the maximum number of electrons will be
15.
In a given atom, no two electrons can have the same values of all the four quantum numbers. This is called
16.
The total number of electrons that can be accommodated in all the orbitals having principal quantum number 2 and azimuthal quantum number 1 are
17.
The maximum number of electrons in a subshell is given by the expression
18.
Number of unpaired electrons in N₂⁺ is/are
19.
The number of spherical nodes in 3p-orbital is/are
20.
The correct sequence of bond enthalpy of ‘C⎯X’ bond is
21.
Which of the following molecules is non-polar in nature?
22.
Which of the following set of molecules will have zero dipole moment?
23.
Which of the following is the correct order of dipole moment?
24.
Which one of the following pairs of species have the same bond order?
25.
Predict the correct order among the following.
26.
Which of the following molecules has the maximum dipole moment?
27.
Which one of the following molecules contain no π-bond?
28.
Which of the following is least likely to behave as Lewis base?
29.
The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH₃ (1.5 D) is larger than that of NF₃ (0.2 D). This is because
30.
In which of the following molecules are all the bonds not equal?
31.
Which of the following would have a permanent dipole moment?
32.
In BrF₃ molecule, the lone pairs occupy equatorial positions to minimise
33.
In NO₃⁻ ion, number of bond pair and lone pair of electrons on nitrogen atom are
34.
In which of the following, bond angle is maximum?
35.
In PO₄³⁻ ion, the formal charge on each oxygen atom and P—O bond order respectively are
36.
Which one is not paramagnetic among the following? [at. no. of Be = 4, Ne = 10, As = 33, Cl = 17]
37.
The molecule which does not exhibit dipole moment is
38.
For two ionic solids CaO and KI, identify the wrong statement among the following.
39.
Which one of the following has the highest dipole moment?
40.
The BCl3 is a planar molecule whereas NCl3 is pyramidal because
41.
The weakest among the following types of bond is
42.
Which of the following statements is not correct?
43.
Which one of the following is the correct order of interactions?
44.
Among the following which compound will show the highest lattice energy?
45.
Strongest hydrogen bonding is shown by
