Which is the strongest bond, ionic or covalent

An ionic bond  

Explanation:

There is some overlap, but an ionic bond is usually stronger.

The lattice energies of ionic substances have a range of 700 kJ·mol⁻¹ to 11000 kJ·mol⁻¹.

Covalent bond dissociation energies range from 150 kJ·mol⁻¹ to 1100 kJ·mol⁻¹.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

he would use the colour black