19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The state of hybridization of the central atom is not the same as in the others:
The hybridization of the central atom in ICl 2 is:
Which of the following angle corresponds to sp2 hybridisation? C = C M(CO)3 C H NC NC
Diagonal hybridisation is the another name of
Assuming the bond direction to the z-axis, which of the overlapping of atomic orbitals of two-atom (A) and (B) will result in bonding? (I) s-orbital of A and px orbital of B (II) s-orbital of A and pz orbital of B (II…
In a compound the number of sigma and pi bonds respectively are :
The strength of bonds formed by s-s, p-p and p-s overlap has the order:
The strength of covalent bond ___________ extent of overlapping of orbitals. a) may be or may not be related to b) is independent on c) is dependent on d) is not related to Ans. (c) Sol. As per the concept of valence …
Which of the following does not represent positive overlap? (a) (b) (c) (d) Ans. (b) Sol. Out of phase overlap occurs in (b) Thus, it shows negative overlap.
The valence bond theory explains the shape, the formation and directional properties of bonds in polyatomic molecules like CH4, NH3 and H2O etc., in terms of
VBT theory is based on the
FAsF bond angle in AsF3Cl2 molecule is:
Which of the following are isoelectronic and isostructural? NO ,CO ,ClO ,SO (a) NO ,CO (b) SO ,NO (c) ClO ,CO (d) CO ,ClO Ans. (a) Sol. Both have 32 electrons and have trigonal planar shape.
Which is not correctly matched?
The shapes of XeF4, Θ XeF and SnCl2 are:
Which of the following pairs of species have identical shapes? (a) NO and NO
Match the following Column and choose the correct option from the codes given below. Column I Column II A. BeCl2 1. Linear B. BF3 2. Trigonal planar C. CO2 Codes : A B C (a) (b) (c) (d) Ans. (c) Sol. BeCl2, CO2 linear…
The species having pyramidal shape is
Which of the following molecules have same bond order? H2, He2, C2 and O2
Match List - I with List- II. Choose the correct answer from the options given below : (NEET 2022) List-I(Hydrides) List-II(Nature)
Amongst the following which one will have maximum 'lone pair- lone pair' electron repulsions? (NEET 2022)
Which amongst the following is incorrect statement? (NEET 2022)
The geometry of sulphate ion is (AFMC 2009)
If I2 is dissolved in aqueous KI, the intense yellow species 3I is formed. The structure of 3I ions is (DUMET 2009)
A covalent molecule AB3 has a pyramidal structure. The number of lone pair and bond pair of electrons in the molecule are respectively (KCET 2009)