OBCOMCHM1020 INTRO TO CHEMISTRY COLLEGE Course Home Content Grades Communication

Question

OBCOMCHM1020 INTRO TO CHEMISTRY COLLEGE Course Home Content Grades Communication Assessments T Question 1 An ionic bond is best descibed as the sharing of electrons the transfer of electrons from one atom to another. the attraction that holds the atoms together in a polyatomic ion. the attraction between 2 nonmetal atoms. the attraction between 2 metal atoms. D View Feedback Question 2 A covalent bond is best described as the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion. a bond between two polyatomic ions.

Explanation / Answer

A chemical bond is a attraction between atoms , ions or molecules that enables the formation of chemical bonds. 2 types of bonds- ionic or covalent .

1. Ionic bond -(b)- transfer of electrons from one atom to another. It require at least one electron donor (metal)& one electron acceptor(non- matal). It develops 2 oppositely charged ions. The metal loses electrons to become a +vely charged cations & non - metal accepts electrons to become a -vely charged anions.

2. Covalent bond-(a.) Shairing of electrons between atoms. It occurs between non - metals or between non- metals or metals. eg:- HCl

3. KBr- an electron is transferred from K to Br , resulting in the formation of K+ & Br-, which are held together by electrostatic attraction .

4. (b)- only Li3N- 3Li+ & N3-

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