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it possibly shows how many shells an element has to show its atomic number
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What role does the element of motivation play in performances?
A
What determines an elements chemical properties?
Chemical properties of an element determine by the number of electron
What role does oxygen play in the harvesting of energy?
It is the final electron receptor in the process of cellular respiration.
What are the limitations of aufbau principle?
1. The Aufbau principle cannot be used to predict electron configuration of atoms on ionization. In other words, it does not tell us which electrons are to be removed when an ion is formed form an atom. For example, the configuration of Fe based on Aufbau principle is 1s2 2s2 2p6 3s2 3p6 4s2 3d6. It has been experimentally confirmed by spectral and magnetic studies than tFe2+ has configuration 1s2 2s2 2p6 3s2 3p6 3d6 and not 1s2 2s2 2p6 3s2 3p6 4s2 3d4. It means that ionization results in the loss of 4s electrons in preference to 3d electron even thought the 3d were the last to be added in building up the configuration of Fe atom. It means that in Fe2+ ,3d has lower energy than 4s which is contrary to Aufbau order of filling. This can be said of any transition element on ionization. 2. Although (n-1) d subshells and ns subshells lie quite close together , yet the former is somewhat higher in energy. Accordingly the predicted Aufbau outer configurations of Cr (Z = 34) is .....3d4 5s2 but the experimentally supported configuration is ....3d5 4s1. 3. In the sixth period , 4f and 5d subshells are exceedingly close in energy . At lanthanum (Z = 57),the last electron does not go to 4f as predicted in Aufbau order but is added to 5d subshell to give it a configuration ....4d10 5s3 5p6 5d1 6s3. However, the next electron for valium (Z =58) is added to the 4f subshell and the previous electron in 5d in lanthanum is also shifted to 4f to give it a configuration ....4d10 5s2 5d6 4f2 5d0 6s2. 4. The Aufbau order configuration of zirconium (Z =40) is ....5s2 4d2 and that the predicted order for the next element niobium Nb (Z =41) would be ...5s2 4d3 . However, the observed configuration of Nb is... 5s1 4d4. It is understandable that the next element molybdenum Mo (Z =42) acquires.....5s1 4d5 configuration due to higher stability associated with half-filled configuration. However, the next element technetium Tc (Z =43) with observed configuration 5s1 4d6 in place of predicated 5s2 4d6 shows that the preference for half-filled or completely-filled configuration is not the only controlling factor but some complex nucleus=electron and electron-electron forces also have some role to plat in deterring these configuration. 5. In case of palladium pd (Z=46), the predicted Aufbau configuration is 5s2 4d8 but the experimentally observed configuration is 5s0 4d10. This is perhaps the only case where the observed configuration has two misplaced electron.
What role do high-energy electrons play in the electron chain?
The electron transport chain uses the high-energy electrons from the Krebs cycle to convert ADP into ATP.
Which particles play the greatest role in creating chemical bonds?
Electrons involve in bond formation.They are responsible for bonds.
What role does atonmic number play in the periodic table?
The atomic number is the amount of protons in an element. The number of protons completely determine what element an atom is.
Where are protons and electrons that are responsible for the chemical properties of an atom are located?
The answer is "the electron." "Valance Electron" is a more specific and correct answer.
Did Gary Oldman play a part in the movie 'The fifth element'?
Gary Oldman played the role of Jean-Baptiste Emanuel Zorgin the movie "The Fifth Element."
What is the role of PnP in NIC configuration?
the role of the pnp is to secure the safety of the people
What is the chemical behavior of an atom is determined by?
By using the activity series (sometimes called reactivity series) which orders metals by their reactivity with other metals, one can determine the reactivity of a metal
What role do electrons play on determining the stability of an atom?
The role electrons play in stabilizing an atom is they balance out the charge of the protons. If an element has more protons than electrons, it has a positive, not neutral, charge, and vice versa. Unpaired electrons can cause an element to be chemically reactive and/or radioactive. Hope this helps!
