Acertain atom has an atomic number of four. how many protons does it have?

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey

Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice