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What is the difference between a stable and unstable electronic configuration?
Stable electronic configuration is when the valence shell of an element is completely filled (8 electrons) whereas unstable electronic configuration is when the valence shell of an element is not completely filled
How many electrons must be gained or lost for calcium to attain a noble-gas electron configuration?
Calcium's electron configuration is [Ar] 4s2. To attain a noble gas configuration, calcium must lose 2 electrons to have the same electron configuration as argon, 4s2 3d10.
In potassium bromide KBr which element forms anions?
Bromine (Br) forms anions in potassium bromide (KBr). It gains one electron to attain a full outer electron shell and achieve a stable electronic configuration.
Which simple ion would chlorine be expected to form?
Chlorine is expected to form a chloride ion with a charge of -1 by gaining one electron to achieve a full valence shell and attain a stable electronic configuration.
When is an element said to be chemical active?
an element is chemically active till it does not attain an inert gas configuration.
Why the metal is very reactive?
Metals , generally, have electronic configuration: with outermost electron having 1,2 or 3. Since, they can easily attain noble gas configuration to attain stability; they readily loose electron.
What is the difference between a stable and unstable electronic configuration?
Stable electronic configuration is when the valence shell of an element is completely filled (8 electrons) whereas unstable electronic configuration is when the valence shell of an element is not completely filled
How are elements form ions that have a stable atomic structure like that are found in a noble gases?
There are three different ways for this. Elements can either gain electrons or lose electrons or share electrons and attain a stable noble gas electronic configuration.
Why do certain atoms react with other atoms?
since not all atoms have same no.of electronic configuration they try to attain an octet sharing electrons each other
How many electrons do you need to become a noble gas?
A species (element, cation or anion) should have eight valence electrons to have a noble gas electronic configuration. However element upto atomic number 4 may have 2 valence electrons and attain the electronic configuration of helium noble gas.
How and why element combine?
elements combine to attain more stability, generally by attaining the electronic configuration of the nearest noble gases. they do so by donating electrons, accepting electrons or by sharing electrons
Why do elements need to attain a noble gas configuration?
All the elements in their normal state are reactive and unstable. In order to attain stability i.e. a state of minimum energy, they tend to form ions by loosing or gaining electrons. By doing so, they achieve stable electronic configuration or noble gas configuration. However, some elements do not form ions. Instead of that, two such atoms share electrons with each other and achieve this noble gas configuration. At the end, the main reason for attaining a noble gas configuration is to attain max. stability and min. energy.
Why are bonds form?
They are formed to attain a balance octet configuration
Why are Group 1 and Group 2 elements found in many compounds but not Group 18 elements?
group 18 has completely filled electronic configuration and hence are stable. group 1 and group 2 have 1 and 2 electrons respectively in their valence shells and needs to lose these to attain completely filled electronic configuration. hence they are reactive.
How many atoms does a phoshorus atom need to attain a noble gas configuration?
Phosphorus should gain 3 electrons and form P3- ion to attain a noble gas configuration
How many electrons does sulfur gain to attain a noble gas configuration?
Sulfur gains two electrons to attain a noble gas configuration, which is the electron configuration of argon. This allows sulfur to have a stable octet of electrons in its outer shell and achieve a more stable electron configuration.
How do you get a noble gas configuration?
Atoms lose or gain or share electrons and tend to attain noble gas configuration
