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you are actually going by the group number on top of the Periodic Table. example Hyrogen is in group one which means it has one valence. another example Si is in group 4 which means it has 4 valences. just remember each group # equal the amount of valences. Good luck

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12y ago
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9y ago

Valence electrons are the number of electrons in the outermost energy level.The groups in the periodic table are made according to the chemical properties of elements.The group number is equal to the number of valence electrons.

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9y ago

The valence electron corresponds to the outer-shell electron of chemical elements found in the periodic table. It determines the chemical properties of the elements.

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9y ago

The last number in the electron configuration, or group #. If the group number is double digits, it is the second number

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Q: How do you find the valence electron when looking at the periodic table?
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Related questions

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.


What is the number of valence electron for all the elements in periodic table group 1A 1?

One valence electron.


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

One valence electron.


How many valence electrons does group 1 in the periodic table have?

it has one valence electron


Why are potassium and sodium in the first column of periodic table?

They have one valence electron.


What is the number of valence electron for all the elements in periodic table group 2A 2?

Two valence electrons.


What is group in periodic table?

In the periodic table, group indicates the number of valence electrons in the outermost shell. E.g. Group I- the elements in that group have one valence electron in the outermost shell.


How are the elements in group 1A on the periodic table similar?

They all have one valence electron.


Why is the alkali metals the first in the periodic table?

Because they have one valence electron each.


How many outermost electrons do lithium and potassium have?

Both lithium and potassium are in Group I of the Periodic Table, so they both have one valence electron.


How many electron in valence shell of electron?

This is a chemical element. You can find the how many electron in a single atom by using a periodic table.


How many valence electron chlorine have?

This is a chemical element. You can find the how many electron in a single atom by using a periodic table.