What causes atoms to form covalent bonds? in a covalent bond, two atoms are held together by the attraction the number of covalent bonds that an atom can form depends on the number in the atom.

Cation and anion cause covalent bonds

:- At cation positive charge are held and at anion negative. .. there is a strong bond between them.

Since a covalent bond is formed by sharing electron pairs, the attraction is between positive nuclei and the shared electron pairs. The number of bonds depends on the number of valence electrons of the atom.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

Electrons are emitted