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1) 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

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

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

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

5) Choose the true statement

6) Which order of IE is incorrect

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

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

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

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

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

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

13) Which of the following will have the highest bond energy?

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

15) 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 ______

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

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

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

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

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

21) Select the specie that has the highest ionic character

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

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

24) The shape of the carbonate ion is

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