Compound or Metal EN ype of Bonding Point first second atom atom NaCI(s) Nal(s)
ID: 105003 • Letter: C
Question
Compound or Metal EN ype of Bonding Point first second atom atom NaCI(s) Nal(s) 0.87 2.87 187 2.00 0.87 2.36 62 149 682 801 66i onic ionic onic Cs(s) Na(s) CuZn(s:brass) 1.8 1.6 7. 0.2 0.66 0.66 0.66 o 0.87 0.87 087 o 28 98 932 metallic metallic metallic F2(g) 02(g) HI(g) C(s; diamond) 2.54 2.54 2.54 0 4.19 4.19 4.19. 0 3.61 3.61 3.61 0 2.30 2.36 2.33 0.06 -220 -218 covalent covalent covalent covalent -51 3000 CH4(8) GaAs(s) 2.54 2.30 2.42 0.24 182 1.76 2.21 1.99 0.45 1238 1.92 1.92 1.920 1410 EN is the average electronegativity of the two elements. AEN is the difference in electronegativity (absolute) between the two elements. Based on the data in Table1, what combination of EN values and EN values leads to ionic bonding? (4 pt) a. Based on the data in Table 1, what combination of EN values and EN values leads to metallic bonding? (4 pt) b. Based on the data in Table 1, what combination of EN values and EN values leads to covalent bonding? (4 pt) C. d. Calculate the EN value and EN value for methane, CH4, to verify the values given in Table 1. If possible, classify the bonding in methane as metallic, covalent, or ionic. Explain your reasoning. (7 pt Calculate the EN value and EN value for GaAs to verify the values given in Table 1. If possible, classify the bonding in GaAs as metallic, covalent, or ionic. Explain your reasoning. (7 pt) e.Explanation / Answer
Answer A
On the basis of data we can predict that average EN value for IONIC bonding should be between 1.5 to 2.5
And Difference of EN values should be between 1.49 to 3.53
Answer B
On the basis of table we can predict that average EN value for METALLIC bonding should be between 0.66 to 1.70
And difference in EN values should be less then 0.5
Answer C
On the basis of data we can predict that average EN value for COVALENT bonding should be between 2.50 to 4.20
And difference in EN values should less then 0.1
Answer D
Average EN of methane
(2.54+2.30)/2 = 2.42
Diferrence in EN 2.54-2.30= 0.24
It should be COVALENT because its EN difference is very less and average is near 2.5
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