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1) Which of the following types of bonds has the least electronegativity difference between the bonding atoms?

2) Ammonia (NH₃) can bond with boron trifluoride (BF). For the bond formation, the electrons are most likely supplied by

3) The elements of ______, ______ and _______ show abnormally low values of electron affinity in every period

4) The high value of the first ionization energy of nitrogen than that of oxygen is due to its

5) Which of the following electronegativity difference suggests that the bond would be ionic nature

6) H-O-H bond angle in H₂O is 104.5° and not 109° because of more space occupied by

7) Choose the true statement

8) The central atom of a specie having three bond pairs with no lone pair will have geometry

9) Which atomic numbers in the periodic table represent the elements that generally show abnormal trends in ionization energy

10) All of the following are co-planar molecules except

11) H₃O⁺ contains
I-Electrovalent bond
II-Dative bond
III-Covalent bond

12) The percentage of s-character in hybrid orbital which indicates the longest bond length

13) The shortening of bonds is due to the predominant participation of ________ orbital in hybridization

14) The bond between carbon and oxygen in CO₂ is most likely:

15) The hybridization of carbon number 2 in 1,2-Butadiene

16) The ionization energies of III-A and VI-A show an abnormal trend while moving left to the right in a period, which can be best explained by

17) The shape of the carbonate ion is

18) Which of the following species contains an sp-hybridized carbon atom

19) Which order of IE is incorrect

20) The energy gap between 2nd ionization energy and 3rd ionization energy is very large, it is true for an element having ______ Z value belonging to ______

21) The half of _________ bond between two similar atoms covalently bonded in a molecule is called the covalent radius.

22) The tendency of an atom to _______ is called electronegativity.

23) The radius of an atom cannot be measured precisely because

24) The bond in the fluorine molecule is formed by the overlapping of ______ on each atom of the fluorine atom

25) Which of the following is the correct bond energy order?