What is the name of cuo? explain how you determined the bond type and the steps you used to determine the naming convention for the compound.

By criss crossing, the charge numbers we find the chemical formula of a compound

For example Aluminium chloride

Al has charge and Cl has charge  

3 becomes the subscript of Cl and 1 becomes the subscript of Al  

So the chemical formula will be

From the formula CuO we get to know the charge numbers of Cu is and O is

It is an ionic compound since it has a metal and a non metal.

Ionic compounds are named using the format as follows  

Metal’s name + root word of the non metal + ide ending (when the metal has only one type of charge)

Example

NaCl is named as Sodium + chloride = Sodium chlor + ide

Metal’s name + charge in roman numeral + root word of non metal + ide ending

(when the metal possess more than one type of charge)

Example

is named as Iron + (II) + chlor + ide = Iron(II)chloride

is named as Iron + (III) + chlor + ide = Iron(III)chloride

When there is a polyatomic ion present

For example the name of the polyatomic ion is used as it  is instead of  ’ide’ ending  

Thus is Sodium phosphate

CuO is Copper (II) oxide (Answer)

Metal + roman numeral for charge + root word of non metal + ide ending used in this

Electronegativities are important to determine the type of bonding.  The bond types are determined by calculating the difference between the electronegativity of the two atoms.

Difference                                   Bond Type

>1.7                                               Ionic bond

0.4<1.7                                   Polar covalent bond

<0.4                                      Non polar covalent bond

the answer is d. 74.02