Ionic bond as in SrF2
No. This is an ionic bond. Look at the electronegativity Cl (3.0) - Sr (1.0) = 2.0; 0.0 to 0.4 is covalent, 0.4+ to 1.7 is polar-covalent and above 1.7 is ionic. You can also assume that a metal and non-metal will form an ionic bonds.
Strontium is a metal. Chlorine is a non metal. Sr donates electrons to Cl to make an crystalline ionic compound.
No, strontium oxide is ionic.
You mean SrBr2. Sr is an alkaline earth metal, which means it can lose 2 electrons to from a cation with a +2 charge. The Bromine is a halogen, which can gain 1 electron to form an anion with a -1 charge. SrBr2 is the correct chemical formula because you need 2 bromines to neutralize the charges. Since ions are involved in this chemical bond, it is an ionic bond.
Covalent Bonding occurs with non-metal elements (O,N,Sr,Xe) Ionic the strongest of all the bonds is with both non and metals like (K and O)
This compound of an alkaline earth metal and a halogen is ionic, as are all such compounds.