Question

there are three types of chemical bonds: covalent, ionic, and metallic.
a covalent bond is formed when two atoms share one or more pairs of electrons. covalent bonds tend to form between nonmetal atoms as their electronegativity difference is relatively small. a compound held together by covalent bonds is called a covalent compound.
this model shows the reaction between two chlorine atoms to form a chlorine molecule (cl₂).
complete the sentences.
a covalent bond forms between two chlorine atoms. two chlorine atoms, each with valence electrons, combine by sharing electrons. each atom in the resulting chlorine molecule has valence electrons.

Explanation:

Step1: Determine the number of valence electrons in a chlorine atom

Chlorine is in group 17 of the periodic table. Atoms in group 17 have 7 valence electrons.

Step2: Analyze the sharing of electrons in \(Cl_2\)

Each chlorine atom needs one more electron to complete its octet (8 - electron outer shell). So, two chlorine atoms share one pair (2) of electrons.

Step3: Calculate the number of valence electrons in the \(Cl_2\) molecule

When two chlorine atoms share 2 electrons (1 pair), each chlorine atom now has \(7 + 1=8\) valence electrons.

Answer:

A covalent bond forms between two non - metal (chlorine is a non - metal) chlorine atoms. Two chlorine atoms, each with 7 valence electrons, combine by sharing 2 electrons. Each atom in the resulting chlorine molecule has 8 valence electrons.