i think is group a elements
The element described is likely a metal. Metals are solid at room temperature, malleable (can be hammered into thin sheets), good conductors of electricity, and tend to react with oxygen to form oxides. Examples of such metals include copper, iron, and aluminum.
Carbon in the form of charcoal or graphite reacts with oxygen in the air to produce carbon dioxide when it burns.
CuH2 is the chemical formula for cuprous hydride, a compound of copper and hydrogen. It is a yellow solid that is not stable in air and reacts readily with oxygen. CuH2 is commonly used in organic synthesis reactions.
Rust is most of all 'metal oxide' which is chemically formed by reaction of certain metals (not all) with oxygen (gas, 20% in air)
The oxide of a metal is a compound formed when a metal reacts with oxygen. It contains oxygen and the specific metal element as cations. Oxides of metals are often solid compounds and can have various properties and uses based on the specific metal involved.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Oxygen is an element and usually consist of 2 oxygen atoms bound i.e O2 it reacts very readily to form compounds with other element's or compounds. Carbon is a fairly stable element is a solid and exists in the form if carbon graphite and diamond depending on the way the atoms are configured. none of these items are particularly toxic. Carbon dioxide is a compound consisting of one carbon and 2 oxygen atoms CO2 and is poisonous to animals.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
The element described is likely a metal. Metals are solid at room temperature, malleable (can be hammered into thin sheets), good conductors of electricity, and tend to react with oxygen to form oxides. Examples of such metals include copper, iron, and aluminum.
Carbon in the form of charcoal or graphite reacts with oxygen in the air to produce carbon dioxide when it burns.
CuH2 is the chemical formula for cuprous hydride, a compound of copper and hydrogen. It is a yellow solid that is not stable in air and reacts readily with oxygen. CuH2 is commonly used in organic synthesis reactions.
Rust is most of all 'metal oxide' which is chemically formed by reaction of certain metals (not all) with oxygen (gas, 20% in air)
The oxide of a metal is a compound formed when a metal reacts with oxygen. It contains oxygen and the specific metal element as cations. Oxides of metals are often solid compounds and can have various properties and uses based on the specific metal involved.
Reacts readily with oxygen (to form rust), has either 2 or 3 valence electrons, reacts with acids, atoms have metallic bonding ("electron sea.")
Chlorine.
When iron reacts with oxygen, the oxide that forms is not a gas. It is a solid compound called iron(III) oxide, which has a red-brown color and is commonly known as rust.
Oxygen is both a compound and an element. In nature, Oxygen forms bonds with itself to form a compound consisting of two elemental oxygen atoms to form one compounded oxygen molecule. This is O2.