Individually, potassium and sulfur are elements and therefore are not ions when found in a pure state. However, K2S (potassium sulfide) is a compound that is formed via ionic bonds between the potassium and sulfur atoms.
Potassium sulfate is ionic. It consists of potassium ions bonded to sulfate ions. Typically, all compounds between metals and nonmetals are ionic.
Potassium Iodide is the chemical name for the molecular formula KI. Potassium forms the cation of K+ and iodine the anion of I-. Thus it is an ionic compound.
Copper is a single element so it is nonpolar. A polar substance forms when two or more elements with different electronegativities bond form a compound.
It's ionic, not polar
K2S, potassium sulfide, is ionic, which is neither polar nor nonpolar. The 2 potassium atoms lose 1 electron each, and the sulfur atom gains the 2 electrons from the potassium atoms. The potassium atoms become positively charged ions, K+, and the sulfur atom becomes a negative ion, S2-, which is now called a sulfide ion. The electrostatic attraction between oppositely charged ions forms the ionic bonds between them, forming the ionic compound potassium sulfide, K2S.
Ionic
Ammonium sulfate is an ionic compound. The formula itself names an anion and a cation.
Potassium Iodide is the chemical name for the molecular formula KI. Potassium forms the cation of K+ and iodine the anion of I-. Thus it is an ionic compound.
Potassium permanganate is a polar compound. This is a salt that has an ionic formula and being polar refers to the type of molecules that are in a compound.
Copper is a single element so it is nonpolar. A polar substance forms when two or more elements with different electronegativities bond form a compound.
It's ionic, not polar
nonpolar
Polar!
It is Nonpolar
Def. non-polar
K2S, potassium sulfide, is ionic, which is neither polar nor nonpolar. The 2 potassium atoms lose 1 electron each, and the sulfur atom gains the 2 electrons from the potassium atoms. The potassium atoms become positively charged ions, K+, and the sulfur atom becomes a negative ion, S2-, which is now called a sulfide ion. The electrostatic attraction between oppositely charged ions forms the ionic bonds between them, forming the ionic compound potassium sulfide, K2S.
CCl4 is nonpolar.
Its ionic