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In the modern Periodic Table, these elements belong to group 17. These elements have s2 p5 electron configuration. Hence they need one more electron from an electron donor to fulfill its valence shell to obtain noble gas configuration.
The elements in the group 7A has 7 electrons in their outermost energy level. They gain 1 electron to get the noble gas configuration. The elements in the group 7A are called halogens.
What else can I help you with?
How many electrons does fluorine need to satisfy the octet rule?
Fluorine needs one additional electron to satisfy the octet rule, giving it a total of 8 valence electrons and achieving a stable electron configuration.
What determines an element's reactivity?
The electrons determine the reactivity. How many valence electrons there are. It is easier to lose one electron rather than three, so an element with one valence electron will be more reactive than one with three.
What can you conclude about a ecosystem with many trophic levels?
it is a stable ecosystem
How many atoms is at Saturated carbon atom bonded to?
A saturated carbon atom is bonded to four other atoms. In organic compounds, this typically includes other carbon atoms or hydrogen atoms. This arrangement allows the carbon atom to reach its stable configuration with a full outer shell of electrons.
How many elements can the 3rd shell hold?
The 3rd shell can contain 18 electrons. The elements that have a 3rd shell as the outer shell are the the elements in period 3, where the 3s and 3p orbitals are filled to a maximum of 8 electrons. The 3d orbitals are filled in the 4th period in the transition elements.
How many electrons does barium lose to become a stable octect?
Two electrons.
How many electrons must beryllium loose to become stable?
Beryllium is a stable element.
How many electrons does group 2 lose?
Group 2 elements lose 2 electrons to achieve a stable electron configuration.
How many electrons would fluorine have to gain or lose too become stable?
Fluorine has 7 valence electrons. In order to become stable, Florine will share 1 electron with another atom to get 8 electron and become stable.
How many electrons does group 6A need to gain to become a noble gas?
They should gain 2 electrons to attain noble gas electronic configuration. (it doesn't become a noble gas as the number of protons are not same)
What group is stable and will not bond?
Noble Gases are stable due to the "octet" rule (they have as many electrons as they can hold) and will not bond.
How many electrons does sulfur gain or lose to become stable?
Sulfur gains 2 electrons to become stable.
How many electrons does a magnesium atom need to lose to become stable?
2
How many electrons does Ca lose to become more stable when bonding?
Calcium (Ca) typically loses 2 electrons to become more stable when bonding, as it has 2 valence electrons in its outer shell. By losing these electrons, calcium achieves a full octet, making it more stable.
How many electrons an atom has lost gained or shared to become stable?
the oxidation number
All atoms become stable when they have how many valence electrons?
Atoms become stable when they have a full outer electron shell, which typically means having 8 valence electrons (except for hydrogen and helium, which are stable with 2 valence electrons). This stable configuration is known as the octet rule.
How many electrons must tantalum need to gain or lose to become stable?
Tantalum needs to lose 2 electrons to become stable. Tantalum has 73 protons, so losing 2 electrons will give it a full outer shell of 71 electrons, which is the most stable configuration for the element.
