0
Nothing! I assume you are referring to an atom's electron shells. As a general rule, everything in nature tends to the lowest energy state. I like to think of this as the laziness principle: the lazier something can be, or the least amount of energy it can use, the best. It is the reason that a ball will roll down a hill: at the bottom, it will have less kinetic energy, therefore better.
Back to atoms. An atom with its outermost electron shell filled is in the lowest energy state it can be in. Elements with their outermost shells filled (i.e. Neon, Argon, etc... look at a Periodic Table) are generally difficult to have react with another substance. Any reaction would require it to give up electrons: something it does not want to do. A LOT of energy is needed for a reaction to rip an electron away from one of those elements.
That said, you can also use this principle to figure out why things react the way they do. ionic compounds, such as NaCl, or table salt, are formed based on both of the elements (Na and Cl) being able to fill their outermost shells. Cl normally has a charge of -1, which means it has one extra electron. Na has a charge of +1, meaning it lacks an electron. When you combine the two, Cl allows Na to borrow its extra electron, resulting in an association between the two in which they are both at a lower-level (and more favorable) energy state.
What else can I help you with?
An atom with an incompletely filled outermost energy level is likely to be?
An atom with an incompletely filled outermost energy level is likely to be reactive. This is because atoms tend to gain, lose, or share electrons to achieve a stable outer electron configuration. Atoms with incomplete outermost energy levels are looking to fill or empty their outermost energy level to achieve stability.
Which column on the periodic table contains elements with completely filled outer energy levels?
The column on the periodic table that contains elements with completely filled outer energy levels is the noble gases column (group 18 or Group 8A). These elements have a full outermost energy level, making them stable and less likely to form bonds with other elements.
What elements have a filled outermost energy level?
Elements with a filled outermost energy level are considered to be stable due to the full complement of electrons. These elements typically fall under the noble gases group in the periodic table, such as helium, neon, argon, krypton, xenon, and radon. The filled outermost energy level results in these elements having little to no reactivity with other elements, making them chemically inert.
What group of elements don't combine with other elements well?
Noble gases, such as helium and neon, are the group of elements that do not combine easily with other elements because they have a full outer electron shell, making them stable and less likely to form chemical bonds.
Describes an atom that has a full outermost energy level?
An atom with a full outermost energy level is considered stable. This means that the atom is less likely to form chemical bonds with other atoms to achieve a full outer shell of electrons. The noble gases, such as helium and neon, are examples of elements with full outer energy levels.
An atom with an incompletely filled outermost energy level is likely to be?
An atom with an incompletely filled outermost energy level is likely to be reactive. This is because atoms tend to gain, lose, or share electrons to achieve a stable outer electron configuration. Atoms with incomplete outermost energy levels are looking to fill or empty their outermost energy level to achieve stability.
Which column on the periodic table contains elements with completely filled outer energy levels?
The column on the periodic table that contains elements with completely filled outer energy levels is the noble gases column (group 18 or Group 8A). These elements have a full outermost energy level, making them stable and less likely to form bonds with other elements.
What elements have a filled outermost energy level?
Elements with a filled outermost energy level are considered to be stable due to the full complement of electrons. These elements typically fall under the noble gases group in the periodic table, such as helium, neon, argon, krypton, xenon, and radon. The filled outermost energy level results in these elements having little to no reactivity with other elements, making them chemically inert.
An element that is likely to combine with other elements to form new substances is said to be?
metallic
What group of elements don't combine with other elements well?
Noble gases, such as helium and neon, are the group of elements that do not combine easily with other elements because they have a full outer electron shell, making them stable and less likely to form chemical bonds.
Describes an atom that has a full outermost energy level?
An atom with a full outermost energy level is considered stable. This means that the atom is less likely to form chemical bonds with other atoms to achieve a full outer shell of electrons. The noble gases, such as helium and neon, are examples of elements with full outer energy levels.
Is an elements reactivity is the determined by numbers of protons found in an atom of the elements true or false?
False. An element's reactivity is determined by the number of electrons in its outermost energy level, rather than the number of protons in its nucleus. Elements with fewer electrons in their outer shell are more likely to react with other elements in an effort to achieve a stable electron configuration.
Which element in group 2 is the most active?
The ist group elements Alkali metals are most active elements.
What is the number of valence electrons for the elements in group 1?
Elements in group 1 (alkali metals) have 1 valence electron. This single electron is in the outermost energy level of the atom, making these elements very reactive and likely to lose this electron to achieve a stable electron configuration.
Which element is more likely to combine with other elements calcium or xenon how do you know?
Calcium is more likely to combine with other elements because it is a metal with a tendency to lose electrons to form positive ions, while xenon is a noble gas with a stable electron configuration and tends to not form chemical bonds with other elements.
Atoms filled with outermost energy levels tend what to participate in chemical reactions?
Atoms filled with outermost energy levels tend to be stable and are less likely to participate in chemical reactions. These atoms have a full valence shell, so they are less reactive and more likely to form stable compounds.
Why are group 1 elements univalent?
Group 1 elements have one valence electron in their outermost energy level, which makes them highly reactive and likely to lose that electron to form a stable cation with a +1 charge. This results in them being univalent in most chemical reactions.
