Question

which period 4 element has a tendency to make one covalent bond to other atoms?

Answer 1

Period 4 elements are : K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr.

Bromine in period 4 has a tendency to make one covalent bond to other atoms. Because all the elements exept Se and Br are metals in period 4. only Se and Br are non metals.

The most common type of bond formed by bromine is a covalent bond. In most cases, bromine shares electrons with other atoms. This is because bromine typically bonds with elements which have a similar electronegativity.Br has seven valence electrons in its valence shell. It shares one electron from other atom to form one covalent bond.

But in the case of Se it has only six valence electrons, so it has to share two electrons from other atoms and form two covalent bonds.