This price is based on the electron configuration.And you have the right to use Aufbau"s dominion to predict the atomic number of the following elements.Radon, Rn is the facet number 86.Following Aufbau"s rules, the electron construction of Rn is: 6s2 4f14 5d10 6p6. This way that you room suming 2 + 14 + 10 + 6 = 32 electrons through respect to the facet Xe.You can verity that the atomic variety of Xe is 54, so once you add 32 you obtain 54 + 32 = 86, i m sorry is the atomic number of Rn.Again, together per Aufbau"s rules, the next aspect of the same group or period is when the 6 electrons of the 7p orbital room filled. Because that that, they have to pass 32 facets whose orbitals are:7s2 5f14 6d10 7p6: count the electrons added: 2 + 14 + 10 + 6 = 32, and also that is why the next element wil have actually atomic number 86 + 32 = 118.Now, when you walk for a brand-new series, you find a new type of orbital, the g orbital, because that which the model predict there space 18 electron to fill.So the next element of the team will have actually ; 2 + 18 + 14 + 10 + 6 = 50 electrons, which way that the atomic variety of this, no yet discovered element, has actually atomic number 118 + 50 = 168.By the method the facet with atom number 118 was currently discovdered at its price is Og. You have the right to search that info in internet.Answers: 118 and 168

The atom numbers the the as yet undiscovered next two members the the collection are 118 and also 168.

You are watching: Find the atomic numbers of the as yet undiscovered next two members of the series.

Further explanation

The noble gases is a team of chemical facets with comparable properties such as under standard problems they room all odorless, colorless, monatomic gases with very low chemistry reactivity.

The heaviest recognized noble gas metal is radon, atomic number 86. Whereby The outermost covering configuration that radon is


Electronic construction of the following noble gas is:

5f^14 6d^10 7s^2 7p^6" />

Therefore, atomic variety of the noble gas after Rn is 86+32 = 118

The atomic number is the variety of protons uncovered in the cell core of every atom of the element.

Electronic construction of quiet the following noble gas have the right to be derived by adding

, which means 50 much more electrons.

So the atomic number = 118 + 50 = 168

Therefore the atomic numbers that the together yet undiscovered following two members the the series are 118 and 168.

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Learn moreLearn more about the atom numbers Learn more about radon Learn more about digital configuration answer details

Grade: 9

Subject: Chemistry

Chapter: the atom numbers

Keywords: the atom numbers, radon, digital configuration, electrons, the noble gas

Yuri Oganessian has already discovered the following noble gas in ~ atomic weight 118, (which is 86 add to 32). The next most likely, if ever encountered, need to be 150 (which is 118 to add 32) or at 168 (which is 118 plus 32 add to 16).



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An atom that lithium-7 has actually an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and also neutrons(4) positrons and also protons