1A 2A 3B 4B 5B (1) (2) (3) (4) 68 7B 8B (5) (6) 1B 23 3A (9) (10)' (11) (12) (13) (14) (15) (16) (17) 4.0 (7) 44 5A 6A TA 3.0 2.0 1.0 4.02 2. 3,5 3.0 0.0 Li 1.0 Be 1.5 B 2.0 2.5 CI 3.0 2.5 Si 1.8 2.1 Mg 1.2 Al 1.5 Br 2,8 Na 0.9 Fe Cu 1.9 Zn Ga As 20 Se 2.4 Cr Co NI Ti 1.5 Mn 1.5 Ge 1.8 181,8 18 Sc 1.3 1.6 1.6 1.6 Ag 3 1.6 K 0.8 Ca 1.0 Ru 2.2 Rh Pd Sn Sb 1.9 1.8 Te 2.1 2.5 Nb 1.6 Mo 1.8 2.2 2.2 1. CdIn 1.9 Zr 1.4 . 17 Y Sr 1.0 Au 2.4 At 2.2 Rb 1.2 Os Ir Pt Po Re 1.9 BI TI 1.8 Pb w 1.7 2.22.2 0.8 Ta 2.2 1.9 1.9 2.0 La 1.1 Hf 1.3 1.5 Ba 0.9 Cs 0.7 Ac Ra 0.9 Fr 1,1 0.7 Lu Gd Tb Dy Ho 121.2 1.11.2 1.21.2 1.21,2 1.2 121.3 Cf Er Tm Yb Pr Nd Pm Sm Eu Ce 1.1 1.1 1.1 No Es Fm Md Th 1.3 Pa 1.5 Np Pu Am Cm Bk 1.7 1.3 1.31.3 1.31.3 1.31.31.31.31.5 |0.7 - 1.4 Figure 9.19 The Pauling electronegativ- ity (EN) scale. The height of each post is proportional to the EN, which is shown on top. The key has several EN cutoffs. In 1.5 - 1.9 2.0 - 2.9 3.0 - 4.0 the main groups, EN increases across and decreases down. The transition and inner transition elements show little change in EN. Here hydrogen is placed near ele- ments with similar EN values. Period Electronegativity Electronegativity 2. Period
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
In developing the concept of electronegativity, Pauling used the term excess bond energy for the difference between the actual bond energy of X¬Y and the average bond energies of X¬X and Y¬Y (see text discussion for the case of HF). Based on the values as shown, which of the following substances contains bonds with no excess bond energy?
(a) PH3 (b) CS2 (c) BrCl (d) BH3 (e) Se8
Trending now
This is a popular solution!
Step by step
Solved in 5 steps
