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What role do valence electrons play in the formation of compound from elements?
Valence electrons are involved in chemical bonding between elements to form compounds. They determine the reactivity and chemical properties of an element, as well as how it will bond with other elements to complete its outer electron shell and achieve stability. The sharing, gaining, or losing of valence electrons in chemical reactions allows elements to combine and form compounds.
What electrons are scattered in the most empty space around?
Electrons in the outermost shell (valence electrons) of an atom are the ones that are most likely to be scattered in the most empty space around the nucleus. This is because these electrons have higher energy levels and are further away from the nucleus, making them more loosely bound and more easily scattered.
What happens for an atomic emission of photons to occur?
Electrons fall from higher energy state to lower energy state in atoms. This can be from outer shells to empty spaces in inner shells or from outside the atom to an empty space in a shell.
Why pcl5 is stable molecule while ncl5 is not?
PCL5 is a stable molecule because phosphorus can accommodate more than 8 valence electrons due to its empty d orbitals in the third energy level. This allows for the formation of stable P-Cl bonds. In contrast, nitrogen in NCl5 does not have empty d orbitals to expand its valence shell beyond 8 electrons, making the molecule highly unstable.
Some matirals are good counductors because they are able to easily transfer what patticals from one atom to another?
the conductivity of a material depends on the transfer of electrons from valence band to conduction band , when the two atoms come closer their outer energy shells (that are active in transfer of electrons ) get divided into two levels valence band which is full of electrons of lower energy and conduction band which is empty of higher energy. The gap between the two levels is called the forbidden energy gap which is a deciding factor for conductivity. for example in conductors these two bands overlap ,and in insulators there is a wide gap hence they are bad conductors ....
Why atoms join together?
To share electrons in order to become balanced with either a full Valence shell or a completely empty Valence shell.
How do atom form chemical bond?
Around the nucleus of atoms circulate electrons. They are in shells. The electrons in empty shells are called valence shells. Now, if a shell isn't full, only partly, an atom will want to fill it. Hence, it will connect with an atom with too many electrons. Nature in general abhors energy and will always try to minimize it. It is energetically favorable for atoms with too many electrons to bond with atoms with too few in the valence orbit/shell. Sometimes it is more energetically favorable to share electrons. This type of bond is a covalent bond.
How do atoms form a chemical bond?
Around the nucleus of atoms circulate electrons. They are in shells. The electrons in empty shells are called valence shells. Now, if a shell isn't full, only partly, an atom will want to fill it. Hence, it will connect with an atom with too many electrons. Nature in general abhors energy and will always try to minimize it. It is energetically favorable for atoms with too many electrons to bond with atoms with too few in the valence orbit/shell. Sometimes it is more energetically favorable to share electrons. This type of bond is a covalent bond.
What is the reactivity of an atom determined by?
The reactivity of an atom is determined by the number of electrons in its outer energy level (valence electrons). Atoms with incomplete valence shells tend to be more reactive as they seek to gain, lose, or share electrons to achieve a stable electron configuration. Electrons in the outermost energy level are involved in chemical reactions.
What is the number of electrons needed for stability in the groups of the periodic table?
They r noble gases which have stable valance shell and grotp no. 18
What role do valence electrons play in the formation of compound from elements?
Valence electrons are involved in chemical bonding between elements to form compounds. They determine the reactivity and chemical properties of an element, as well as how it will bond with other elements to complete its outer electron shell and achieve stability. The sharing, gaining, or losing of valence electrons in chemical reactions allows elements to combine and form compounds.
What electrons are scattered in the most empty space around?
Electrons in the outermost shell (valence electrons) of an atom are the ones that are most likely to be scattered in the most empty space around the nucleus. This is because these electrons have higher energy levels and are further away from the nucleus, making them more loosely bound and more easily scattered.
What happens for an atomic emission of photons to occur?
Electrons fall from higher energy state to lower energy state in atoms. This can be from outer shells to empty spaces in inner shells or from outside the atom to an empty space in a shell.
Method of bond formation for ionic?
Ionic compounds form between two atoms or molecules with opposite charges. Atoms/molecules get these charges when they either gain or lose one or more electrons to fill or empty their valence shell (they generally want either 8 or 0 electrons in their outermost shell).
Why can sulfur expand its octet?
Sulfur can expand its octet because it has empty d orbitals in its third energy level, allowing it to accommodate more than eight electrons in its valence shell.
Why pcl5 is stable molecule while ncl5 is not?
PCL5 is a stable molecule because phosphorus can accommodate more than 8 valence electrons due to its empty d orbitals in the third energy level. This allows for the formation of stable P-Cl bonds. In contrast, nitrogen in NCl5 does not have empty d orbitals to expand its valence shell beyond 8 electrons, making the molecule highly unstable.
What is energy band theory?
Energy band theory is the theoretical framework used to explain the electronic structure of solids in terms of energy bands. It describes how electrons in a solid can only occupy certain energy levels, forming bands of allowed energy states. These bands can be either filled with electrons (valence band) or empty (conduction band), with a band gap separating them.
