34. Pick the true statements from the list below. * 1. Electrons occupy any vacant valence orbitals before forming electron pairs. 2. All valence electrons are used to form bonds with other atoms or ions. 3. When two electrons occupy the same valence orbital of an atom, they form a lone pair of electrons. 4. Nonmetals have higher electronegativity than metals 2 and 4 1,3 and 4 1,2 and 3 All of them 9. Which of the following do NOT have the same number of electrons ? * Aluminium ion and sulfide ion Bromide ion and krypton Lithium ion and helium Calcium ion and potassium ion 37. Electronegativity is best defined as... * a relative measure showing the degree to which electrons can be removed from another atom
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.
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