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

2) 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

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

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

5) Which order of IE is incorrect

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

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

8) 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 ______

9) The shape of the carbonate ion is

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

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

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

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

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

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

16) Select the specie that has the highest ionic character

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

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

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

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

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

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

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

24) Choose the true statement

25) The compromised distance between two hydrogen atoms in a hydrogen molecule is