All of these elements are located in the third period of the Periodic Table. Hence, they have the identical valence shell.
phosphorus
Aluminum, of course. Silicon is a metalloid while Aluminum is a metal.
Aluminum phosphide.
oxygen and silicon
Calcium
luster
Sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon.
Silicon, aluminum, magnesium, iron.
Oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, titanium, hydrogen, phosphorus, and manganese (in that order) are the twelve most common elements in Earth's crust.
No, aluminum is an element. A common form of sand is silicon dioxide, a compound of two elements neither of which is aluminum.
Bronze is an alloy of copper and tin. It may also contain phosphorus, manganese, aluminum, or silicon. It is not of fixed ratios.
phosphorus-doped silicon ( n-type semiconductor) can be be produced by adding phosphorus to silicon to obtain a mixture, then heating and melting the obtained mixture. Or add phosphorus to already melted silicon.
phosphorus
Aluminum, of course. Silicon is a metalloid while Aluminum is a metal.
Bronze is an alloy of copper and tin. It may also contain phosphorus, manganese, aluminum, or silicon. It is not of fixed ratios.
chlorine is the smallest in size. The order of atomic size is chlorine < sulphur < phosphorus < silicon.
Aluminium, silicon, phosphorus, sulfur, chlorine and argon have the valence electrons (1 to 6 respectively) ending in 3p level