When two atoms form a covalently-bonded diatomic molecule, the distance between

Question

When two atoms form a covalently-bonded diatomic molecule, the distance between the nuclei (inter-nuclear distance) at which the potential energy is at a minimum is called a. the entahlpy. b. the bond length. c. the molecular size d. the covalent radius. e. the thermodynamics. If the following arithmetic operations arc carried out, how many decimal places should be reported in the answer? 13.0 + 0.56 + 0.01 + 3.33 a. 1 b. 2 c. 3 d. 4 e. 5 The oxidation number of carbon in carbon monoxide is a. +2 b. -2 c. +4 d. -4 e. 0

Explanation / Answer

Bond length is the distance between the nuclei at minimum potential eenrgy. when the potential energy is minimum, they are father appart, the potential energy increase and they come closer, the potential enegy will be less.

2.the sum is 13.0+0.56+0.01+3.33 =18.90

since 2nd decimal is zero, 1 decimal poitn is enough . ( The answer is a)

3. CO is neutral molecule. the oxidation number of oxygen is -2 and -2+oxidation number of C= 0

Oxidation number of C =2 ( a is correct)

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