Anew element with 120 protons and 2 electrons in its outer level in what group does this element belong

What semimetal can form four single covalent bonds.

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids