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How can the number of valence electrons be determined from the periodic table?
Wiki User
∙ 13y ago
By looking at the group number you can tell how many valance electrons there are ex:
Group 1= 1 valance electrons
Group 2-12= 2 valance electrons
Group 13= 3 valance electrons
Group 14= 4 valance electrons
Group 15= 5 valance electrons
Group 16= 6 valance electrons
Group 17= 7 valance electrons
Group 18= 8 valance electrons
Wiki User
∙ 13y ago
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How many valence electrons does a neutral atom of silicon have?
A neutral atom of silicon will have 4 valence electrons. The amount of valence electrons that a neutral atom will have can be found by the atoms group number in the periodic table.
What do elements in a group have in common?
The elements in the same group have the same number of valence electrons and hence similar chemical and physical properties.
What are valence electrons and what do they determine?
They determine many things. They can be used to predice hybridization, determine octet, be used to assign formal charges. The simplest answer would be for a intro to chem class, they determine the number of electrons in the atom's "outer ring"
How many core electrons in nitrogen?
Nitrogen has 2 core electrons and 5 valence electrons. If you remember, nitrogen has an atomic number of 7. When an atom is neutral it has an equal number of protons and electrons. Therfore, the overal number of electrons is 7. The definition of core electrons is, electrons in their most inner shell, On the other hand valence electrons are electrons in the outermostshell. When looking at a periodic table you see that there is a total# of 5 valence electrons. In order to figure out the core number you subtract the total number of electrons(atomic #) - Valence # of electrons. I hope this helped :)
Does selenium and bromine have the same number of valence electrons?
No, Selenium has 6 valence electrons while Bromine has 7. You can determine this because on the periodic table, Selenium is in Group VI while Bromine is in group VII.
How are properties determined on the periodic table?
they are determined by the outermost shell of electrons
What is the most important factor determining how an atom will bond?
the oxidation number, determined by its group on the periodic table.
The number of electrons in atoms determine in element's propertices?
the valence electrons cause the chemical reations. the valence electrons decide that element attract to which element.
In an periodic table dots around an elements symbol indicate the number of valence electrons in an atom?
yes, the number of dots represent the number of valence electrons in the periodic table.
How can you determine the number of valence electrons an atom has?
The valence is determined experimentally.
What is the difference of number of valence electrons and periodic table group number?
Valence electrons and group number for metal are same. For non-metals, valence electrons are equal to group number-10.
Does the number of valence electrons stay the same throughout the horizontal row?
No, the number of valence electrons does not stay the same throughout the horizontal rows on the periodic table. The number of valence electrons stays the same throughout the vertical columns of the periodic table.
Which side of the periodic table do elements gain valence electrons?
all the elemants have valence electrons the last number of the elecotrons is the elemets valence electrons
Where are elements with the same number of valence electrons?
All elements in the same group have the same number of valence electrons.
How many valence electrons are there in phosphuros?
The number of valence electrons in any element can be found from the element's group number on the periodic table. Phosphorus has a group number of 5 (15 in some periodic tables, in which case the valence is the group number minus ten). Thus, phosphorus has 5 valence electrons.
What happened to the number of valance electrons move from left to right on the periodic table?
the number of valence electrons increases on moving from left to right in periodic table.Group 1 has 1 valence electron and group-18 has 8 valence electrons.
What is the number of valence electrons in the outer shell of each element of group 3?
3: For periodic columns 1 through 3, the number of valence electrons is the same as the number of the periodic column.
