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Except for the noble gases, the atoms of all elements are unstable. This is why they form molecules and compounds, in order to become stable. Stable means having the same valence configuration as a noble gas. For all but the first two elements that means having an octet (8) of electrons in their valence shells after chemical bonding.
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Do elements tend to undergo chemical reactions that decrease stability?
Elements tend to undergo chemical reactions that increase stability.
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.
What does the band of stability for atomic nuclei refer to?
The band of stability is a way of viewing which isotopes of the elements are stable. If you make a graph of number of neutrons versus number of protons of the stable isotopes, you find that the stable isotopes make a thick curved line on the graph which is called the "band of stability." The lighter elements tend to have the number of neutrons equal to number of protons. The heavier elements tend to have more neutrons than protons. The band of stability can help you to predict the behavior of unstable radioactive isotopes as well, because you can predict which decay process will move the element closer to the "band of stability" so it will have the ideal ratio of neutrons to protons.
Why do elements chemically combine?
stability
What atoms can form an ion?
an atom which readily losses or gains electrons to attain stability forms an ion.
What does group 18 become when it is attain in the periodic table?
Group-18 belongs to inert elements. The elements attain stability.
Do elements tend to undergo chemical reactions that decrease stability?
Elements tend to undergo chemical reactions that increase stability.
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.
What is the reason for chemical bond?
The basic reason for chemical bonding among elements is to attain the maximum possible stability. For instance we make relationship bonds among nations to remain in peace or to attain stability!!
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
What does the band of stability for atomic nuclei refer to?
The band of stability is a way of viewing which isotopes of the elements are stable. If you make a graph of number of neutrons versus number of protons of the stable isotopes, you find that the stable isotopes make a thick curved line on the graph which is called the "band of stability." The lighter elements tend to have the number of neutrons equal to number of protons. The heavier elements tend to have more neutrons than protons. The band of stability can help you to predict the behavior of unstable radioactive isotopes as well, because you can predict which decay process will move the element closer to the "band of stability" so it will have the ideal ratio of neutrons to protons.
Why do elements chemically combine?
stability
How are ionic bonds and covalent bonds solve the problem of achieving stability in atoms?
according to octect rule , an atom need to complete the octect to attain stability . The atoms forms ionicbond by donate or accept electrons . And also atoms forms covalent bond by shearing oe electron . The two types bonds are help to attain stability
What atoms can form an ion?
an atom which readily losses or gains electrons to attain stability forms an ion.
What is the island of stability in regard to the chemical elements?
The "island of stability" comes from the shape the heavier elements projected stability makes on a 3D graph. See links below. The general trend of the elements is that as they get heavier (atomic number) stability decreases, but scientists have found that some elements will become more stable if they have a "magic number" of protons and neutrons. The island of stability is the more stable heavy isotopes because of the "magic numbers". Some think the number of neutrons and protons leads to a spherical-shaped nuclei, which leads to stability.
What did rutherfords model fail to explain why elements had?
Stability
Why group 17 elements are strong non metals while group 1 elements are strong metals?
All elements tend to react with other elements so as to attain a noble gas electronic configuration in their ions, because such a configuration usually has the lowest energy for a particular atom or ion, other factors being equal. The drive to form such an ion is strongest when the electron configuration of an elemental atom differs from the closest noble gas configuration by only one electron, and this criterion is true for both group and group 17 elements: Group 1 elements can attain a noble gas electron configuration by donating one electron to another atom, and Group 17 elements can attain a noble gas configuration by accepting one electron, thereby filling their valence shell.
