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Q: Are the highest energy levels in shells always filled first?
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Are the highest energy levels always filled first?

No, the tendency is to fill out lower energy levels first.


How many elecrtons shells would be filled by a neutral xenon atom?

The first 3 energy levels are filled, the 4s and 4p and 4d sublevels are filled, and the 5s and 5p sublevels are also filled. So only the first three energy levels are completely filled. The fourth and fifth energy levels are partly filled. The electron configuration is 1s22s22p63s23p63d104s24p64d105s25p6 or [Kr]4d105s25p6.


What is true about the electron configurations of the noble gases Decent levels are partially filled be the electrons with the highest energy you sublevel see the highest occupied SN?

The valence electron shell of noble gases is full.


Which atom is more chemically reactive an atom with a partly filled energy level or an atom with all energy levels completely filled?

the one that is completely filled


How are the electrons arranged in energy levels?

The innermost energy level always contains two electrons and the rest are arranged in 8s. for example the energy levels of calcium- 2,8,8,2. calcium contains 20 electrons. once the energy levels are filled upto 8 electrons then we move from onto the next energy level. hope this makes sense lol :)


Atoms with filled energy levels form chemical bonds?

False


What are the highest occupied energy levels in aliminium?

The highest occupies energy level in aluminum is the 3rd energy level. Its electron configuration is 1s22s22p63s23p1.


Does xenon have five energy levels?

Yes, it has 5 energy levels as it belongs to group 5. The 54 electrons in xenon are filled in these energy levels as 2, 8, 18, 18, 8


Does neon have the highest energy level among noble gases?

Neon has only 2 energy leves. Radon has the highest with 6 energy levels.


What does the period number tell about the energy levels ocupied by electrons in an atom?

The period number tell about the energy levels occupied by electrons


What atom has its first three energy levels which are fully occupied by electrons?

Neon has the 1s2, 2s2, and 2p6 levels filled.


How come noble gases do not compounds readily?

Their outer energy levels are completely filled.