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Physics Secondary School answered The Valence shell Configuration of Group llA is a. ns1 b.ns2 c.np2 d.np3PLZ SAY ONLY CORRECT OPTION PLZ S Get the answers you need, now. Point to Remember: Mostly for transition and inner transition elements, the valence electrons are the electrons present in the shells outside the noble gas core. The Valence shell Configuration of GroupllA is a. (See the above or below periodic table to see the valence electrons of inner transition metals). Inner transition elements can have valence electrons ranging from 3 to 16. For groups 13-18, the number of valence electrons is the group number minus 10. In some inner transition metals, the electrons of incomplete d-orbitals are also considered as valence electrons. If you use the numbering system of labeling each group from left to right as 1-18, groups 1 and 2 have one valence electron and two valence electrons respectively. Hence, for inner transition elements, the electrons of both f-subshells as well as s-subshell behave like valence electrons.
![ns2 np3 valence shell group 5a ns2 np3 valence shell group 5a](https://wou.edu/chemistry/files/2017/04/valence-electrons-1.png)
The inner transition elements have incomplete f-subshells and they are very close to the outer s-subshell. (See the above or below periodic table to see the valence electrons of transition metals).Īlso the two bottom rows at the bottom of the periodic table are the inner transition elements (or f-block elements) also have the similar case. Hence, the transition elements (i.e d-block elements from group 3 to 12) can have more valence electrons ranging from 3 to 12. So, the electrons of both d-subshell and s-subshell behave like valence electrons. metals lose their valence electrons to form cations and nonmetals tend to gain electrons to form anions. chemical difference between metals and nonmetals. elements with chemical properties determined by the valence shell s and p electrons elements that belong to groups 1A through 8A.
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It is more difficult to find the valence electrons of transition elements as they have incompletely filled d-subshell and this d-subshell is very close to the outer s-subshell. Terms in this set (85) representative elements. What about valence electrons of transition and inner transition elements?įor the transition elements and inner transition elements, the case is more complicated. Well, this suits perfectly for the main group elements (i.e group 1, 2 and group 13 to 18), but what about the transition and inner transition elements? Hence, magnesium has 2 valence electrons. Here, you can see that the highest principal quantum number is 3, and the total electrons in this principal quantum number is 2. The electron configuration of magnesium is 1s 2 2s 2 2p 6 3s 2. Valence electrons can also be determined as the electrons present in the shell with highest principal quantum number (n). The magnesium element has 2 electrons in outermost orbit.