Potassium nitrate is solid state of matter. and look like as shown in the figure. I've added a diagram for your easiness
Copper: 2+Oxygen: 2-Nitrogen: 5+
The element nickel is a solid at room temperature.
No. It is an ion with two different elements: nitrogen and oxygen.
In Mn(NO3)2, the nitrate ion (NO3) has an oxidation state of -1, and since there are two nitrate ions, their total contribution is -2. To balance this, manganese (Mn) must have an oxidation state of +2. Therefore, the oxidation state of Mn in Mn(NO3)2 is +2.
Selenium is a solid at room temperature and pressure, making it a solid state of matter.
Cu(NO3)2 is typically a solid state of matter at room temperature. It is a compound that is commonly seen as a white to pale blue crystalline powder.
It is in a solid state of matter.
a natural state of matter would be tellurium
No. It is an element. It is in a state of matter, specifically "Solid".
Copper: 2+Oxygen: 2-Nitrogen: 5+
Mg(NO3)2 {note correct case for "O"} is not an element at all. Instead it is a compound of three elements, magnesium, nitrogen, and oxygen.
Gas
Which element changes the density of matter
The element nickel is a solid at room temperature.
chlorine is a gas
Its presumably solid...
No. It is an ion with two different elements: nitrogen and oxygen.