My teacher in college says that bonds between metals and nonmetals are Ionic.

$ \ce{Metal - Metal} $ $\Rightarrow$ Metalic bond

$\ce{Non metal - Non metal}$ $\Rightarrow$ Covalent bond

I have to write about $\ce{Cl Cu2}$, and found in Wikipedia that if you subtract electronegativity you get what bond it is.

Cl = 3,16

Cu = 1,90

3,16 – 1,90 = 1,26.

X < 0.4 $\Rightarrow$ covalent non-polar

0.4 < X < 1.7 $\Rightarrow$ covalent polar

X > 1.7 $\Rightarrow$ ionic

So it should be really a covalent bond. Which one is correct?

My teacher in college says that bonds between metals and nonmetals are ionic.

$ \ce{Metal - Metal} $ $\Rightarrow$ Metalic bond

$\ce{Non metal - Non metal}$ $\Rightarrow$ Covalent bond

I have to write about $\ce{CuCl2}$, and found in Wikipedia that if you subtract electronegativity you get what bond it is:

$$\chi (\ce{Cl}) = 3.16, \quad \chi (\ce{Cu}) = 1.90$$

$$\chi = 3.16 - 1.90 = 1.26$$

$\chi < 0.4 \Rightarrow$ covalent non-polar

$0.4 < \chi < 1.7 \Rightarrow$ covalent polar

$\chi > 1.7 \Rightarrow$ ionic

So it should be really a covalent bond. Which one is correct?

My teacher in college says that bonds between metals and nonmetals are Ionic.

$ \ce{Metal - Metal} $ => Metalic bond

$\ce{Non metal - Non metal}$ => Covalent bond

I have to write about $\ce{Cl Cu2}$, and found in Wikipedia that if you subtract electronegativity you get what bond it is.

Cl = 3,16

Cu = 1,90

3,16 – 1,90 = 1,26.

X < 0.4 => covalent non-polar
0.4  < X < 1.7 => covalent polar
X > 1.7 => ionic

So it should be really a covalent bond. Which one is correct?

My teacher in college says that bonds between metals and nonmetals are Ionic.

$ \ce{Metal - Metal} $ $\Rightarrow$ Metalic bond

$\ce{Non metal - Non metal}$ $\Rightarrow$ Covalent bond

I have to write about $\ce{Cl Cu2}$, and found in Wikipedia that if you subtract electronegativity you get what bond it is.

Cl = 3,16

Cu = 1,90

3,16 – 1,90 = 1,26.

X < 0.4 $\Rightarrow$ covalent non-polar

0.4 < X < 1.7 $\Rightarrow$ covalent polar

X > 1.7 $\Rightarrow$ ionic

So it should be really a covalent bond. Which one is correct?

My teacher in college says that bonds between Metals and No Metals are Ionic.

Metal - Metal = Metalic Non metal - Non metal = Covalent

I have to write about Cl Cu2, and found in Wikipedia that if you substract electronegativity you get what bond it is.

Cl = 3,16 Cu = 1,90

3,16 – 1,90 = 1,26.

X < 0.4 = Covalente no polar 0.4 < X > 1.7 = Covalente polar X > 1.7 = Ionic

So it should be really a Covalent bond.... which one is correct?

My teacher in college says that bonds between metals and nonmetals are Ionic.

$ \ce{Metal - Metal} $ => Metalic bond

$\ce{Non metal - Non metal}$ => Covalent bond

I have to write about $\ce{Cl Cu2}$, and found in Wikipedia that if you subtract electronegativity you get what bond it is.

Cl = 3,16

Cu = 1,90

3,16 – 1,90 = 1,26.

X < 0.4 => covalent non-polar
0.4  < X < 1.7 => covalent polar
X > 1.7 => ionic

So it should be really a covalent bond. Which one is correct?