As is present in group-15. It has 5 valence electrons.
Strontium has 2 valence electrons. It is in group 2 of the periodic table, which means it has 2 electrons in its outermost energy level.
i think its 4 though ive herd it to be 6 by some, ur best bet is to use the periodic table.
A bromine anion (Br-) contains 8 valence electrons. Bromine is in group 7A of the periodic table and has 7 valence electrons. When it gains an extra electron to form an anion, it now has a total of 8 valence electrons.
5
Since sodium has atomic number 11, its electronic configuration is untill 3s1. This means the valence shell has 1 electron, so it has 1 valence electron.
One
oxygen has 6 valence electrons as indicated by the 6A above the group oxygen is in
The electron configuration of barium is [Xe]6s2.Barium has six electron shells with 2, 8, 18, 18, 8, 2 electrons.
whatever the number of the element on the periodic table is
i dont know u tell me
In the periodic table, "K" represents potassium, which has the atomic number 19. The "O" in "KO" typically refers to oxygen, with the atomic number 8. However, "KO" is not a standard notation in the periodic table; it might refer to potassium oxide (K₂O) in chemical contexts, where potassium combines with oxygen.
Sodium has one valence electron in its outermost shell (the third electron shell). To achieve a stable electron configuration, similar to that of the nearest noble gas (neon), sodium needs to lose this single valence electron rather than gain more. Therefore, sodium does not need additional valence electrons; it only needs to lose its one valence electron to achieve stability.