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The electrons on the outermost shell of an atom tell you how many valence electrons an atom on the Periodic Table has , and this number can be used to apply to the octect rule .
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If an atom has a stable number of electrons how can you tell?
It's outer valence shell is full.
What information do the periods number give you?
The periods in the periodic table tell you the energy level where the last electrons are being added. So, in period 1, the outermost electrons are in the first energy level or shell. In the 3rd period, the outermost electrons reside the the 3rd energy level, and so on.
Why do sodium and potassium have the same number of dots in their electron dot diagrams what does this tell you about the chemistry of these two elements?
No,sodium has an atomic number of 11 therefore it has 11 electrons with the electronic configuration 2,8,1whereas potassium has 19 electrons with an electronic configuration of 2,8,8,1They both have different numbers of electrons but have the same number of electrons in their 'valence' shell ( outer most shell) as they are both in Group 1
The atomic number of an atom indicates the number of?
The atomic number is the number of protons in the atom. In the case of a neutral atom (as opposed to an ion), the atomic number is also equal to the total number of electrons.
What does the period number tell you?
It tells you the number of cations in the outer energy level of the element's atomic mass
If an atom has a stable number of electrons how can you tell?
It's outer valence shell is full.
What columns in periodic table tell us about the atom?
How many valence (outer shell) electrons an element has.
How can you tell that the beryllium atom is unstable?
You can tell that the beryllium atom is unstable because beryllium only has 2 valence electrons in its outer shell. An atom becomes stable when it has eight valence electrons, so in the case of beryllium it would have to lose those 2 electrons in its outer shell to become stable. often forming a cation with a 2+ charge.
Property you cant determine about an atom from the atomic chart is?
Group numbers tell us that how many electrons an atom contain in its outer shell. Eg. Na11 have 1 electron in its outer shell it means Na belongs to group 1. and so on.
How can you tell from the periodic table how many outer shell electrons an atom will have?
you cant its inposible just pay attention in class and u will find out.
How can you tell if an atom has a negative charge?
you can tell an atom has a negative charge if its outer shell is not stable(happy)/full
What does the number of dot tell us about each atom?
Lewis dots are concerned with electrons in the outer most shell of an atom. This means that no matter how many electrons an element contains, Lewis dots will never number higher than eight.
Does Cl have a negative or positive charge?
The chloride ion has a negative charge; Cl-. You can tell because chlorine is on the right side of the periodic table in the second column from the right. All elements in this column have a charge of -1.
What does an elements location on the periodic table of elements tell you about that element?
The amount of electrons and their position in the atom is the main thing. The atomic number of an element is it's amount of protons. That makes the periods (rows). Groups are put in place using where the electrons are in the atom (how many electrons are in the outer shell of that atom). All elements in a representative element group have the same amount of electron sin the outer shell. (e.g. all elements in Group 1 have 1 electron in the outer shell)
How can you tell if an element will conduct energy?
Elements are in fact a bundle of energy if you will. I believe what your asking is How can you tell if an element will conduct electricity. If an atom contains less the the required atoms for its outer shell to become full and stable, it is classified as a conductor. Here's why: The atoms of a given element is composed of the protons, neutrons, and electrons. Electrons are the "electricity" part of an atom. These electrons orbit the protons and neutrons that are at the center of the atom. The electrons are in Valence shells, which is basically which orbit the electrons are on, the closest shell/orbit can contain only 2 electrons, and then it is said to be stable and full; the second valence shell/orbit can only contain 8 electrons, and then it is said to be stable and full; the third valence shell/orbit can only contain 8 electrons, and then it is said to be stable and full also ect.... Now, if we took the third valence shell, and it only contained 1 electron, it is NOT stable and full, so this 1 electron/electricity-part-of-the-atom is free to float around to other empty shells. This is due to the fact that the electrons always want to be in a stable shell/orbit. Some atoms of certain elements naturally contain a full AND therefore stable outer valence shell, (the furthest shell/orbit away.) If an atom contains less the the required atoms for its outer shell to become full and stable, it is classified as a conductor.
How do you tell how many electrons are in the outer layer of an element?
The outermost principal shell -or regions around the nucleus where electrons move- contains the valence electrons. The number of valance electrons can be calculated for the columns with A's above them. The number given to the column represents the number of valence electrons (written before and next to the A). For instance, Lithium (Li) and Sodium (Na) have one valence electron because they are in column one. During chemical bonding, these two elements and others in their column have the same configuration of outer electrons; thus, they tend to lose their single electron in order to gain a full outer shell. Similarly, oxygen (O) and sulfur (S) have 6 valence electrons, so they tend to gain electrons to make their full outer shell.
How can you tell if an atom has the same valence as carbon?
Silicon and Germanium, Tin and Lead all have the same number of valence eelectrons as carbon.
