A compound is a group of two or more elements
Unstable means it is highly reactive, and can condense, decompose, polymerize, or become self-reactive quite easily due to pressure or temperature
NI5 ?IF it exists it would be Nitrogen PentaIodide. It would also be very unstable (i think) so don't go near it.
Lithium peroxide (Li2O2) is the compound with the formula LiO2. It is an unstable compound that can be formed by reacting lithium oxide (Li2O) with oxygen.
Copper(II)nitride
It is stable
The imaginary compound nitrogen pentaiodide would be NI5 , it would not be an acid- there are no ionisable H atoms. (or a Lewis acid- it has no lone pair.) There is a real compound NI3, a very unstable substance a contact explosive. There is a reported PI5, but that is disputed.
Thermally unstable compounds are decomposed before melting or boiling.
If a substance is thermally unstable it means it breaks down at high temperature. It cannot withstand high temperature.
Crystals with line defects are thermally unstable as its ethalpy change increases more than its entropy change. This leads to an increased in Gibbs free energy.
Lithium carbonate (Li2CO3) is thermally unstable compared to other alkali metal carbonates like sodium carbonate (Na2CO3) and potassium carbonate (K2CO3). This is because of its smaller ionic size and higher charge density, which leads to stronger lithium-oxygen bonds that are more easily broken by heat, causing the compound to decompose at lower temperatures.
The Li2 compound is unstable under certain conditions.
By heating this compound is thermally dissociated: iron oxide and sulfur dioxide are obtained.
C3O5 is a chemical formula for a compound known as tricarbon pentoxide. It is an unstable and non-existent compound.
Heat can be used to break compounds because there is a chemical reaction that takes place and it causes the particles in the compound to break
Plumbane, or PbH4, is a rare and unstable compound. Not any uses are currently common. Plumbane is an unstable colorless gas.
NI5 ?IF it exists it would be Nitrogen PentaIodide. It would also be very unstable (i think) so don't go near it.
Copper carbonate decomposes easily because it is thermally unstable, meaning it breaks down when exposed to heat, releasing carbon dioxide and leaving behind copper oxide. This reaction occurs at relatively low temperatures, making copper carbonate a useful compound for studying decomposition reactions in chemistry labs.
Lithium peroxide (Li2O2) is the compound with the formula LiO2. It is an unstable compound that can be formed by reacting lithium oxide (Li2O) with oxygen.