Yes, oxygen typically has a valence of -2. This means it commonly gains two electrons to achieve a full outer shell, resulting in a stable electronic configuration. This -2 oxidation state is prevalent in many compounds, such as water (H₂O) and oxides.
The beryllium atom has 4 electrons and the valence is 2.
Helium has 2 electrons (total of 2 electrons and 2 valence electrons)
To find the total number of valence electrons in ALAS (which consists of aluminum (Al), sulfur (S), and four oxygen atoms), we first determine the valence electrons for each element. Aluminum has 3 valence electrons, sulfur has 6, and each oxygen atom has 6 valence electrons, totaling 24 for four oxygens. Therefore, the total number of valence electrons in ALAS is 3 (Al) + 6 (S) + 24 (O) = 33 valence electrons.
The valence level of beryllium is 2. This means that in its neutral state, beryllium has 2 valence electrons.
Strontium has 2 valence electrons because it is part of the Alkaline Earth Metals or Group 2 of the periodic table which all have 2 valence electrons
2 Carbon atoms, 4 Hydrogen atoms and 2 Oxygen atoms. So, a total of 8 atoms.
PO43-.This in superscript form, hence, the formula is one phosphorous, 4 oxygens, and 3- valence electrons.
The element Sulfur has 6 valence electrons. : )
hydrogen and 2 oxygens
2
Oxygen typically has a charge of -2 when it forms compounds.
The beryllium atom has 4 electrons and the valence is 2.
Helium has 2 electrons (total of 2 electrons and 2 valence electrons)
To find the total number of valence electrons in ALAS (which consists of aluminum (Al), sulfur (S), and four oxygen atoms), we first determine the valence electrons for each element. Aluminum has 3 valence electrons, sulfur has 6, and each oxygen atom has 6 valence electrons, totaling 24 for four oxygens. Therefore, the total number of valence electrons in ALAS is 3 (Al) + 6 (S) + 24 (O) = 33 valence electrons.
Calcium has 2 valence electrons, like all Group 2 elements.
Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).
There is no limiting reactant in that equation, it's balanced. Four hydrogens on the left, 4 on the right, 2 oxygens on the left, 2 oxygens on the right. If it was 3H2 then it would be oxygen.