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How many electrons are in an Alkaline-earth element valence she'll?
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What are Valence elcetrons?
Valence electrons are the electrons on the outermost energy shell of an element.
Where are the valence electrons in an atom?
In the outermost shell that has electrons in it, those are called the valence electrons. For example carbon has 6 electrons, but only 4 are valence electrons because there are 2 in the shell in between it and the center of the element and 4 on the outside shell.
How many valence electron does chlorine?
The element chlorine has seven electrons in its valence shell.
Which things determine an element's electronegativity?
the number of valence electrons in the atom's outer shell how much the valence electrons are shielded from the nucleus
What are the electrons on an element's farthest or outermost electron shell?
Valence.
What element has 5 valence electrons in the M shell?
Phosphorus
Is the element reactive or satble how do you know?
If the element has a full valence shell, such as the noble gases, then it is unreactive. It the element is missing few valence electrons of has few valence electrons, then the element is very reactive, such as the sodium.
How many electrons are there in the valence shell of a nitrogen atom?
Nitrogen has 5 valence electrons. Its atomic number is 7 therefore it has a total of 7 electrons. If you put this in a Bohr-Rutherford Diagram, there would be 2 electrons in the first shell (Helium structure) and 5 electrons in the outer shell. The number of electrons in an element's outermost shell is its number of valence electrons.
The chemical properties of an atom depend on the number of what?
It depends on the number of electrons in the outer valence shell in the atom
The tendency of an element to react chemically is closely related to what?
its Atomic Mass.
Which elements is less reactive an element whose atoms have seven valence electrons or an element whose atoms have eight valence electrons?
the element with seven valence electrons will be more reactive. The reason for this is that elements want to always want to have a full valence shell (they always want 8, like a noble gas). The element with eight valence electron is happy with its full shell and will not want to get rid of any electrons.
When is an element stable?
For an element to be stable, it must have a full outer shell (valence shell) of electrons. An element with a full outer shell of electrons will act like its nearest noble gas and be stable. Most elements require 8 valence electrons to be stable, however H needs 2.
