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In physics and chemistry, monatomic is a combination of the words "mono" and "atomic," and means "single atom." It is usually applied to gases: a monatomic gas is one in which atoms are not bound to each other. At standard temperature and pressure (STP), all of the noble gases are monatomic. These are helium, neon, argon, krypton, xenon and radon. The heavier noble gases can form compounds, but the lighter ones are unreactive. All elements will be monatomic in the gas phase at sufficiently high temperatures. The only mode of motion of a monatomic gas is translation (electronic excitation is not important at room temperature). Thus in an adiabatic process, monatomic gases have an idealised γ-factor (Cp/Cv) of 5/3, as opposed to 7/5 for ideal diatomic gases where rotation (but not vibration at room temperature) also contributes. Also, for ideal monatomic gases: : the molar heat capacity at constant pressure (Cp) is 2.5 R = 20.8 J K-1 mol-1 (4.97 cal K-1 mol-1); : the molar heat capacity at constant volume (Cv) is 1.5 R= 12.5 J K-1 mol-1 (2.98 cal K-1 mol-1); where R is the gas constant.
A monatomic compound is a chemical compound composed of individual atoms of only one element. These compounds do not contain multiple elements bonded together, only a single element. Examples include noble gases like helium, neon, and argon.
All chemical elements will be monatomic in the gas phase at sufficiently high temperatures. Noble gases are the only chemical elements which are stable single atom molecules at standard temperature and pressure.
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Is borax monatomic?
No, borax is not monatomic. It is a compound made up of boron, oxygen, and sodium ions.
Is hellium a compound?
No, helium is not a compound. It is a monatomic gas, meaning it consists of single atoms of helium.
Is potassium iodide a poly atomic ion?
No, potassium iodide is a compound composed of the monatomic ion K+ (potassium cation) and the monatomic ion I- (iodide anion). It is not a polyatomic ion.
Is sulfur hexafluoride an example of a monatomic ion?
No, sulfur hexafluoride is not an example of a monatomic ion. Sulfur hexafluoride is a compound consisting of one sulfur atom and six fluorine atoms bonded together. Monatomic ions are single atoms that have gained or lost electrons to become charged ions.
What formula for a compound has monatomic and polyatomic ions present?
The formula of a compound containing both monatomic and polyatomic ions can be written by balancing the charges of the ions to achieve overall electrical neutrality. For example, in the compound sodium sulfate (Na2SO4), the sodium ion is monatomic, and the sulfate ion (SO4) is polyatomic.
Is borax monatomic?
No, borax is not monatomic. It is a compound made up of boron, oxygen, and sodium ions.
Is sulfur hexafluoride a monatomic ion?
No, sulfur hexafluoride (SF6) is a compound composed of sulfur and six fluorine atoms. It is not a monatomic ion because it contains multiple atoms bonded together.
Why is monatomic nonsense?
Because it has to have more than one atom to be a compound.
Which polyatomic ion forms a neutral compound when combined with a group 1a monatomic ion in a 1 2 ratio?
The sulfate ion (SO4^2-) forms a neutral compound when combined with a group 1a monatomic ion in a 1:2 ratio. This means that for every one monatomic ion from group 1a, two sulfate ions are needed to form a neutral compound.
Is hellium a compound?
No, helium is not a compound. It is a monatomic gas, meaning it consists of single atoms of helium.
Is potassium iodide a poly atomic ion?
No, potassium iodide is a compound composed of the monatomic ion K+ (potassium cation) and the monatomic ion I- (iodide anion). It is not a polyatomic ion.
Which polyatomic ion forms a neutral compound when combined with a group 1A monatomic ion in a 1 to 2 ratio?
The sulfate ion (SO4^2-) forms a neutral compound when combined with a group 1A monatomic ion such as potassium (K+) in a 1:2 ratio. This results in the formation of K2SO4, which is a neutral compound.
Is sulfur hexafluoride an example of a monatomic ion?
No, sulfur hexafluoride is not an example of a monatomic ion. Sulfur hexafluoride is a compound consisting of one sulfur atom and six fluorine atoms bonded together. Monatomic ions are single atoms that have gained or lost electrons to become charged ions.
Which polyatomic ion forms a neutral compound when combined with a group 17 monatomic ion in a 11 ratio?
Ammonium, NH4+
What formula for a compound has monatomic and polyatomic ions present?
The formula of a compound containing both monatomic and polyatomic ions can be written by balancing the charges of the ions to achieve overall electrical neutrality. For example, in the compound sodium sulfate (Na2SO4), the sodium ion is monatomic, and the sulfate ion (SO4) is polyatomic.
What does monatomic mean?
'Monatomic' means having or consisting of single atoms.
Why is a monatomic compound nonsense?
A monatomic compound does not make sense because it consists of only one type of atom, which cannot bond with itself to form a stable compound. Compounds typically involve atoms of different elements coming together through chemical bonds to create a more stable arrangement.
