1 мая 2021 г. · 1st period can have two elements (one orbital (with 1 suborbital) with 2 electrons. 2nd period can have eight elements (two orbitals with 1 and 3 suborbitals ...

22 февр. 2018 г. · You increase the number of electrons, but also the pull to the nucleus (more protons), so that changes various properties (ionization energy).

25 мар. 2018 г. · The basic idea is this: as you move across the periodic table, the number of valence electrons increase.

24 янв. 2018 г. · Period number tells us how many electron shells, or orbits, or energy levels an element has. Nothing more.

23 июл. 2021 г. · Because atoms with higher atomic numbers have larger, outer electron shells. The first outer shell has 2 electrons. The next shell has 8.

5 мар. 2017 г. · Atomic size decreases because of increase in effective nuclear charge. Another reason is. As we move along the period the no of electrons are ...

15 февр. 2016 г. · The trend of atomic size in periods is decreasing, because the number of electron and proton increases which results in more attraction inside ...

28 февр. 2018 г. · The trend of atomic size in periods is decreasing, because the number of electron and proton increases which results in more attraction inside ...

22 дек. 2017 г. · Atom size increases down a group because each period represents an additional energy level occupied by electrons.

12 июл. 2017 г. · Why does the number of elements vary from period to period? Early on some rare naturally occurring elements had yet to be discovered. The number ...