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Valence electrons are the electrons on the outer most shell of a neutral atom; they are used when forming chemical bonds with other atoms. Because of the octet rule - which is a chemical bonding theory based on the assumption that in the formation of compounds, atoms exhibit a tendency for their valence shells to either be empty or a full 8 electrons (octet) - atoms that do not have an octet need to either get rid of their electrons or gain more electrons. Atoms combine with other atoms in order to stabilize themselves.
For example if sodium and chlorine were to combine sodium would need to lose 1 valence electron while chlorine would need to gain 1 valence electron.
Na + Cl ------> NaCl
FYI NaCl, sodium chloride, is table salt.
*NB* All elements react in order to become stable and either get an octet or empty their shell. They are all attempting to be like the noble gases, which are hellium, neon, argon, krypton..etc. FYI noble gases are all stable and have 8 valence electrons.
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A compound composed of two elements that share valence electrons?
A compound composed of two elements that share valence electrons is called a covalent compound. In covalent compounds, atoms share valence electrons to achieve a stable electron configuration. Examples include water (H2O) and methane (CH4).
The elements within a group have a similar number of?
Elements in the same group have the same number of valence electrons. These are the outer-shell electrons that react with other elements.
Where do elements have the same number in valence electrons?
Elements in the same group have the same number of valence electrons.
What are valence electrons for responsible for?
Valence electrons are responsible for chemical boding.
How many valence electrons does an element in group 4 have are they reactive?
All elements in group four have FOUR valence electrons. This is easy to remember because the group number located at the top of the periodic table of elements corresponds precisely in all cases to the experimentally observed number of valence electrons in the elements. It is also important to know that the elements in group eight (the inert gases) all have eight valence electrons, meaning that they can neither gain or lose electrons in the way of bonding with other elements, thus the maximum number of valence electrons any molecule can have is eight.
A compound composed of two elements that share valence electrons?
A compound composed of two elements that share valence electrons is called a covalent compound. In covalent compounds, atoms share valence electrons to achieve a stable electron configuration. Examples include water (H2O) and methane (CH4).
How many valence electrons do transitions elements have?
How many valence electrons do transition elements have?
What is the number of valence electrons for group 2 elements?
Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).
The elements within a group have a similar number of?
Elements in the same group have the same number of valence electrons. These are the outer-shell electrons that react with other elements.
Where do elements have the same number in valence electrons?
Elements in the same group have the same number of valence electrons.
The Halogen family elements have how many valence electrons?
Halogen family members, or elements in group 17, have 7 valence electrons.
What does the group of A elements tell about valence electrons?
All elements in the same A group will have the same number of valence electrons.
What are valence electrons for responsible for?
Valence electrons are responsible for chemical boding.
How can one determine the valence of an element in a chemical compound?
The valence of an element in a chemical compound can be determined by looking at the group number of the element on the periodic table. The group number indicates the number of valence electrons an element has. For example, elements in group 1 have a valence of 1, elements in group 2 have a valence of 2, and so on. The valence of an element is important in understanding how it will react with other elements to form compounds.
How many valence electrons does an element in group 4 have are they reactive?
All elements in group four have FOUR valence electrons. This is easy to remember because the group number located at the top of the periodic table of elements corresponds precisely in all cases to the experimentally observed number of valence electrons in the elements. It is also important to know that the elements in group eight (the inert gases) all have eight valence electrons, meaning that they can neither gain or lose electrons in the way of bonding with other elements, thus the maximum number of valence electrons any molecule can have is eight.
How many electrons occur in the valence level of Group 7A and 7B elements. Why are they different?
Group 7A elements have 7 electrons in their valence level, while Group 7B elements have 17 electrons in their valence level. This difference occurs because elements in Group 7A have 7 valence electrons, while elements in Group 7B have 7 valence electrons plus the 10 additional electrons in the d sublevel which contributes to a total of 17 valence electrons.
What does the group number of A elements in the AB numbering system tell about valence electrons?
The group number of A elements in the AB numbering system indicates the number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on. Valence electrons are important because they determine the chemical properties and reactivity of an element.
