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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) Select the specie that has the highest ionic character

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

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

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

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

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

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

9) Which order of IE is incorrect

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

11) Choose the true statement

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

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

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

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

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

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

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

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

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) All of the following are co-planar molecules except

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

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

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

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