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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

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Is the number of valence electrons equal to the number of protons?

No, the number of valence electrons is not always equal to the number of protons. The number of valence electrons is determined by the group number of an element on the periodic table, while the number of protons is the atomic number of the element.


How do you know how many valence electrons does calcium have?

its in column two on the periodic table, so therefor it has two valence electrons .


What does the group number of the periodic table tell you about the structure of an atom?

The group number of an atom in the periodic table tells you the number of valence electrons that atom has. Valence electrons are involved in the atom's chemical reactions and determine its chemical properties. Atoms in the same group have similar chemical behaviors due to having the same number of valence electrons.


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 don you notice about the number of valence electrons as you move from left to right across a row or the period in the periodic table na-mg-al-si-p-s-ci-ar?

The number of valence electrons increases by one as you move from left to right across a period in the periodic table. Sodium (Na) has 1 valence electron, magnesium (Mg) has 2 valence electrons, aluminum (Al) has 3 valence electrons, silicon (Si) has 4 valence electrons, phosphorus (P) has 5 valence electrons, sulfur (S) has 6 valence electrons, chlorine (Cl) has 7 valence electrons, and argon (Ar) has 8 valence electrons.

Related Questions

What is the most important factor determining how an atom will bond?

the oxidation number, determined by its group on the periodic table.


Is the number of valence electrons equal to the number of protons?

No, the number of valence electrons is not always equal to the number of protons. The number of valence electrons is determined by the group number of an element on the periodic table, while the number of protons is the atomic number of the element.


How do you determine the number of valence electrons in an atom?

The number of valence electrons in an atom can be determined by looking at the group number of the element on the periodic table. The group number indicates the number of valence electrons an atom has. For example, elements in group 1 have 1 valence electron, elements in group 2 have 2 valence electrons, and so on.


Does the valence electrons equal the number of protons?

No, the number of valence electrons does not necessarily equal the number of protons in an atom. The number of valence electrons is determined by the group number of the element in the periodic table, while the number of protons is the atomic number of the element.


What do you use on the periodic table to determine the number of valence electrons?

To determine the number of valence electrons, you look at the group number of an element on the periodic table.


How do you determine the number of valence electrons if you know the group no of elements?

valence electrons are electrons at the outermost shell as we all know, group in PE can be determined by looking at the valence electron thus if it is in group 1..then the valence electron is 1


How can the number of core electrons be determined on the periodic table?

The number of core electrons can be determined from the periodic table by identifying an element's atomic number, which indicates the total number of electrons. Core electrons are those that are not in the outermost shell; for main group elements, this typically includes all electrons in completed inner shells. To find the number of core electrons, you can subtract the number of valence electrons (the electrons in the outermost shell) from the total number of electrons. For example, oxygen (atomic number 8) has 6 core electrons and 2 valence electrons.


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.


How do you know how many valence electrons does calcium have?

its in column two on the periodic table, so therefor it has two valence electrons .


How can you determine the number of valence electrons an atom has?

The valence is determined experimentally.


How would you find valence electrons in a periodic table?

To find the number of valence electrons of an element using the periodic table, you can look at the group number of the element. The group number indicates the number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on.


How can one determine the number of valence electrons for an element on the periodic table?

To determine the number of valence electrons for an element on the periodic table, look at the group number of the element. The group number indicates the number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on.