Is cubr2 an ionic or covalent compound?

Answer : The compound is an ionic compound.

Explanation :

Ionic compound are the compounds where the atoms are bonded through ionic bond.

Ionic bonds are formed by the complete transfer of electrons. The atom which looses the electron is considered as electropositive atom and the atom which gains the electron is considered as electronegative atom.

The ionic bonds are formed between one metal and one non-metal.

Covalent compound are the compounds in which atoms are covalently bonded.  

Covalent bonds are formed by the equal sharing of electrons. These bonds are commonly formed between two non-metals.

In the given compound , copper (Cu) is a metal and bromine (Br) is a non-metal. So, will form ionic bond.

Hence, the compound is an ionic compound.

3 1/4 %

explanation:

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l