19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which one of the following is not paramagnetic?
Using MO theory, predict which of the following species has the shortest bond length? (a) O (b) O (c) O (d) O Ans. (d) Sol. As we know, Bond length 1/bond order. In option A, Ohas bond order 2.5 In option B, Ohas bo…
Accordingly MO theory (a) O is paramagnetic and bond order is greater than O2. (b) Ois paramagnetic and bond order is less than O2. (c) Ois diamagnetic and bond order is less than O2. (d) Ois diamagnetic and bond orde…
Which of the following molecules have same bond order? H2, He2, C2 and O2
Metallic bond is.
Which of the following has the lowest boiling point? (Punjab PMET 2008)
The compound MX is tetrahedral. The number of XMX angles in the compound is:
Which of the following compounds have the same no. of lone pairs with their central atom? (I) XeF (II) BrF (III) XeF (IV) H S (V) Triple Methylene
Which molecule has regular geometry? (I) SnCl (II) NH (III) PCl (IV) SF
Given the correct order of initials T or F for the following statements. Use T is statement is true and F if it is false: (I) The order of repulsion between different pair of electrons is LP – LP > LP –BP > BP – BP (I…
Which molecular geometry is least likely to result from a trigonal bipyramidal electron geometry?
Given the correct order of initials T or F for the following statements. Use T if statements is true and F if it is false: (I) CH P CF is non-polar and CH P CF is polar molecule (II) CH P CH bond angles a…
The dipole moment of o, p and m-dichlorobenzene will be in the order :
Which has a maximum dipole moment? (a) (b) (c) (d)
Which of the following substances has the least covalent character?
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)
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas? (AIPMT 2009)
According to Kossel and Lewis approach, the outer shell can accommodate a maximum of …X… electrons. Here, X refers to
Lewis postulated that atoms achieve the stable octet when they are linked by
Atoms can combine either by transfer of valence electrons from one atom to another or by sharing of valence electrons in order to have an octet in their valence shells. This is called.