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The 3rd shell can contain 18 electrons. The elements that have a 3rd shell as the outer shell are the the elements in period 3, where the 3s and 3p orbitals are filled to a maximum of 8 electrons.

The 3d orbitals are filled in the 4th period in the transition elements.

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Does Argon have a bigger atomic radius then Neon?

I would say no. The potassium atom has 1 valence electron which is in the 4th valence shell. To form the potassium ion, it gives away this electron - thus becoming K+. Now, it has no electrons in the 4th valence shell - they are all in the 3rd valence shell. Argon also has all of its electrons in the 3rd valence shell. Also, K+ now has the same number of electrons as Argon. The reason why, at least I would say, argon has a larger radius than K+ is that even though they are in the same valence shell and have the same number of electrons, argon has one less proton than K+. This means that argon's nucleus does not pull in its electrons with quite as much force as K+. Therefore, the electrons (on average) are not as close to the nucleus as with K+. At least, this is how I would reason this out.


What is the most common element of human body?

By molar amount, hydrogen and oxygen are the most common elements; carbon is the third. By mass, oxygen is the most common, and carbon is the second (with hydrogen being third by mass). By mass, oxygen is the most abundant, and phosphorus is the least, carbon the 2nd, hydrogen, 3rd. By atoms, hydrogen is most abundant, and phosphorus the least, oxygen 2nd, carbon 3rd.


When would an atom be chemically stable not react?

An atom would be considered chemically stable and not likely to react when its outer electron shell is full. This full outer shell provides the atom with a low energy state, making it less likely to participate in chemical reactions to gain or lose electrons. Examples of stable atoms are noble gases like helium, neon, and argon.


What is the 3rd trophic level?

The 3rd trophic level contains organisms that are primary consumers, often herbivores that feed on producers from the 1st trophic level. These organisms are then consumed by predators at higher trophic levels.


Somatesthetic sensations reach the postcentral gyrus by way of a 3rd order neuron which begins in the?

thalamus.

Related Questions

How many electrons can the 3rd atom shell hold?

The third electron shell can hold a maximum of 18 electrons.


How many of atoms are in the 3rd shell of an atom with 4 shells?

If you are asking about the number of electrons then it would be 8. The first shell can hold a maximum number of 2 electrons. The second and third shell would have a maximum of 8 electrons each.


How many electrtrons can the second electron shell hold?

Use the figure 2n2 where n = the shell number. Following this, we can find out that there are a maximum of eight electrons in the second shell.The 2nd Shell holds 8, as well as the 3rd.4th holds 18I support your answer that 2nd shell contain 8electrons.But it is not so correct about the 3rd shell.I know upto 9th class it is taught that 3rd shell contain only 8 electron.After that theory is changed as more elements with higher atomic number are intoduced.It is also proved by 2n2 property.2*32=184th shell contain 32electrons.


How many electrons are in the first electron shell?

The first electron shell can hold up to 2 electrons.


What is the configuration for chlorine?

Chlorine is the 17th element in the periodic table. The 1st shell can only hold 2 electrons The 2nd shell can only hold 8 electrons The 3rd shell can only hold 8 electrons Therefore, the electronic configuration would be: 2, 8, 7 1st 2nd 3rd Altogether, it makes up 17.


How many electrons can be on level 3?

The third energy level can hold a maximum of 18 electrons.


How many electrons can 3rd shell hold?

The third shell can hold a maximum of 18 electrons. The third shell consists of one s orbital (2 electrons), three p orbitals (6 electrons), and five d orbitals (10 electrons).


What is row on the periodic table called what do they have in common?

The row is called the period. Each element in the same period has the outermost electrons in the same shell (energy level). For example, the elements in the 3rd period all have the outermost electrons in the 3rd shell.


How many elements are there in 3rd transion elements?

There are eight third period transition elements on the periodic table.


How many electrons fit in the 3rd shell?

The third shell, also known as the M shell, can hold a maximum of 18 electrons. This shell consists of 3 subshells: s, p, and d. The s subshell can hold up to 2 electrons, the p subshell can hold up to 6 electrons, and the d subshell can hold up to 10 electrons.


How many electrons does k have in each energy level?

In the first energy level (K shell), an atom can hold up to 2 electrons. In the second energy level (L shell), an atom can hold up to 8 electrons.


How many electrons can the first second and third shell hold?

Two, Eight and EighteenAdded:The maximum number of electrons in all (1-7) shells (or periods I to VII) of the common Periodic table of elements:First K-shell: 2Second L-shell: (2)+6= 8Third M-shell: (2+6)+10= 8+10= 18Fourth N-Shell: (2+6+10)+14= 18+14= 32Fifth O-shell: .........................= 32+18= 50 (in common periodic table: max. reached at 32)Sixth P-shell: .........................= 50+22= 72 (max. reached at about 18)Seventh Q-shell: (2+6+10+14+18+22)+26= 72+26= 98 (max. reached at 2)It is amazing to see the regularity and periodicity of these maximum numbers of electrons.Would Mendeleev have expected anything like this when he came to his first idea's on 'arranging elements in a table' like he did and has got the Nobel Prize for Chemistry 1906 for.