2.
In the case of alkali metals, the covalent character decreases in the order :
3.
Which of the following molecules has the maximum dipole moment ?
4.
Which of the following pairs of species have the same bond order ?
5.
Which of the following has the minimum bond length ?
6.
Read the question given below
7.
Which of the following is paramagnetic ?
8.
The correct increasing ionic nature is :
9.
Which of the following is electron-deficient ?
10.
The total number of π-bond electrons in the following structure is
11.
The number of unpaired electrons in a paramagnetic diatom molecule of an element with atomic number 16 is :
12.
The correct order of increasing bond angles in the following triatomic species is :
13.
Which one of the following compounds shows the presence of intramolecular hydrogen bond ?
14.
Which is expected to show paramagnetism ?
15.
Maximum bond angle at nitrogen is present in which of the following?
16.
The pair of species with the same bond order is :
17.
In which of the following molecules are all the bonds not equal ?
18.
Read the question given below
19.
In which of the following bond angle is maximum ?
20.
Which one of the following molecules will form a linear polymeric structure due to H-bonding ?
21.
Which of the following pairs of compounds is isoelectronic and isostructural ?
22.
Which one of the following species has plane triangular shape ?
23.
Read the question given below
24.
Read the question given below
25.
Which of the following statements is not correct for sigma and pi-bonds formed between two carbon atoms?
26.
The correct order regarding the electronegativity of hybrid orbitals of carbon is :
27.
The correct sequence of increasing covalent character is
28.
Which of the following pairs of ions is isoelectronic and isostructural ?
29.
Which of the following is a polar molecule ?
30.
The correct bond order in the following species is:
32.
The molecule having permanent dipole moment is :
33.
Read the question given below
34.
Which of the following pairs is isostructural ?
35.
Which one of the following pairs is isostructural (i.e., having the same shape and hybridisation)?
36.
Which of the following is an electron deficient molecule ?
37.
The correct order of C-O bond length among the following is
38.
Which of the following is not a correct statement ?
39.
The correct order of increasing bond length of C - H,C -O,C - C and C =C is :
40.
Which of the following species contains three bond pairs and one lone pair around the central atom?
41.
Which of the following option represents the correct bond order ?
44.
In which of the following pairs, both the species are not isostructural ?
45.
The correct order in which the O -- O bond length increases in the following is
46.
Which of the following two are isostructural ?
47.
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them :
48.
Read the question given below
49.
According to MO theory, which of the following lists ranks the nitrogen species in terms of increasing bond order ?
50.
Read the question given below
51.
Read the question given below
52.
Read the question given below
54.
Among the following which has the highest cation to anion size ratio ?
55.
Read the question given below
56.
The correct order of increasing bond angles in the following species is :
57.
Read the question given below
58.
Four diatomic species are listed below in different sequence Which of these represents the correct order of their increasing bond order ?
59.
In X ------------ H ------------- Y, X and Y both are electronegative elements
60.
Which one of the following orders is not in accordance with the property stated against it?
61.
The species, having bond angles of 120° is:
62.
Read the question given below
63.
Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.
65.
Read the question given below
67.
Which of the following species does not exist under normal conditions ?
68.
Read the question given below
69.
Which of the following compounds has the lowest melting point?
70.
Which molecule has trigonal planar geometry ?
71.
Which of the following species has a linear shape ?
72.
Which of the following species contains equal number of σ- and π bonds ?
73.
Which one of the following molecules contains no л-bond?
74.
In which of the following pπ-dπ bonding is observed ?
75.
Bond order of 1.5 is shown by :
76.
Among the following the pair in which the two species are not isostructural is
77.
Which of the following pairs of ions are isoelectronic and isostructural ?
78.
Read the question given below
79.
Read the question given below
80.
In which one of the following species, the central atom has the type of hybridisation which is not the same as that present in other three ?