0
What else can I help you with?
Why cant H N O F Cl Br and I be alone?
The elements H, N, O, F, Cl, Br, and I cannot exist alone as stable diatomic molecules because they are highly reactive and typically form bonds with other atoms to achieve a full valence shell. For instance, they often pair with another atom of the same element, resulting in diatomic molecules like H₂, N₂, O₂, F₂, Cl₂, Br₂, and I₂. This tendency to bond helps them attain greater stability through shared electrons. Additionally, their electronegativity and reactivity drive them to seek out bonding partners rather than remaining isolated.
Is an element the same thing as a molecule?
Yes. 7 non-metals: hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine, consist of a "diatomic molecule" of two identical atoms of that element. Sulfur, phosphorus, carbon, and few other elements do this too under certain conditions.
What are some elements with a single atom that cannot be combined?
When atoms combine to make molecules only the electrons adhere together to form bonds. The protons, neutrons, and nucleus do not combine.
Is channel-mediated diffusion a form of active transport?
Yes, when channels are specific for the structures of individual molecules it is active transport. Active transport cannot occur if the energy they are moving is not of the same type, like glucose cannot move calcium.
Why maltose sugar not ready for absorption?
Maltose is a complex sugar made up of two glucose molecules which cannot be directly absorbed into the body. Hence it needs to be broken down into two individual glucose molecules for ready absorption.
Why can't diatomic elements exist on their own?
Diatomic molecules cannot exist on their own because if they are alone they are very unstable and will react with any element very quickly.
Why is all compounds molecules?
All elements and compounds are present in molecular state. They cannot be found as individual atoms. Atoms cannot exist in free state.
Is all molecules compound?
All elements and compounds are present in molecular state. They cannot be found as individual atoms. Atoms cannot exist in free state.
What is the relationship between molecules and elements?
Elements are the basic building blocks of matter and cannot be broken down into simpler substances. Molecules are formed when two or more atoms of different or the same element chemically combine. In other words, elements are the individual components, while molecules are the combinations of these components.
What cannot be separated into its individual elements by physical means?
Chemical compounds or molecules cannot be separated into their individual elements by physical means. These substances require chemical reactions or processes, such as electrolysis or heating, to break the bonds between their constituent elements.
Which group of the periodic table contains elements that exist as diatomic molecules?
There is a firm IUPAC convention about the numbering of the groups in the periodic table. There does not appear to be one about numbering the periods. Sometimes the first row, containing only H and He is regarded as period 1, or sometimes as period Zero. I will presume that your question was using the first numbering, and frame an answer with respect to elements Na --> Ar Most of the lighter elements in the periodic table will form X2 gases. The ones that will not are (i) Those that have an exactly filled subshell in the electron structure of their atom, and (ii) Those that do not have significant vapour pressure below temperatures where molecules cannot exist, and all matter is monatomic. Na & Cl will form vapours of Na2 and Cl2 respectively. Al & Si do not evaporate until very high temperatures, but low enough that some diatomic molecules can be found in what are largely monatomic vapours. P & S form vapours of P4 and S8 respectively at low temperatures around their respective boiling points, but in each of these cases there is a higher temperature range where P2 or S2 molecules can be observed. Mg and Ar do not form diatomic molecules in the gas (or any other) phase.
What cannot be seperated by physical means?
Elements
How was neptunium separated into individuals elements?
Neptunium is an individual element; isotopes of neptunium are not separated.
Is nitrogen gas a element or a compound?
Nitrogen gas consists of molecules, each of which consists of two atoms of the element nitrogen. Since a compound has to consist of two or more elements nitrogen cannot be a compound, by definition.
Explain why you call oxygen an element even though oxygen gas in the atmosphere is made from molecules?
Oxygen is considered an element because it consists of atoms with the same number of protons in their nucleus. While oxygen gas in the atmosphere is made up of diatomic molecules (O2), each molecule contains two oxygen atoms bonded together. These individual oxygen atoms are still considered elements because they cannot be broken down into simpler substances by ordinary chemical reactions.
Minerals made of only one element?
It's called an elemental mineral, like diamond (crystallized carbon) or gold.
What is formed of two atoms?
There are several types of diatomic molecules, that is molecules formed by two atoms. Molecules formed by two identical atoms are frequent like gaseous hydrogen and oxygen (H2 and O2) while other molecules are made by different atoms like carbon monoxide (CO), nitric oxide (NO), and hydrogen chloride (HCl). It is to be noted that diatomic molecules have to be distinct by substances that are not formed by separated molecules, but where two atoms are present in an equal stoichiometric ratio. For example, solid NaCl (that is common cooking salt) is a crystal with a number of sodium atoms equal to the number of chloride atoms. In a crystal a regular disposition of atoms of different kinds is present where individual molecules cannot be insulated.
