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Just look at how many columns it is from the left side, sodium has 1 valence electron, magnesium has 2... chlorine has 7 and argon has 8

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10y ago
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6y ago

The oxidation state is the difference between 8 and the number of valnce electrons, excepting transition metals.

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Q: How can the periodic table help you determine the number of valence?
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Related questions

How do you determine valence from the periodic table?

Each group/family on the periodic table can determine valence electrons by the last number of the group/family number, like helium. It's a noble gas that has 8 valence electrons because it's on the 18 family/group


What can you tell about the properties of this element?

The periodic table can be used to quickly determine characteristics (number of valence electrons for example) of an 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 would you find valence electrons in a periodic table?

the group number of the periodic table shows the valence electron. such as :- sodium is placed in group 1 and have valence electron.


How an atom valence electrons configuration determine its place on the periodic table?

the valence electron number equals the group number. the principal energy level equals the period number it's located in.


Is a chart that displays all elements by atomic numbers and can be used to determine the number of valence electron for some elements?

the periodic table


What is the valence number of Sc or Ni ine the periodic table table?

2


What is the number of valence electrons in family 1A of the periodic table?

One valence electron.


What does a period on the periodic table tell us?

Elements in the same period has same number of valence shells.There are 7 periods in Periodic Table.


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.


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 can you determine the number a valence electron an atom has?

you must plot out the element like protonéatomic number by using the bhor diagram