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calcium
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How many valance electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
How does sulfur forms its ion?
ions are formed based upon the valence electrons of the element and if the element is a metal or a nonmetal. S has 6 valence electrons and needs 2 more to be stable. it is a nonmetal. therefore, taking on 2 electrons gives S a -2 charge
Which element has a mass number of 40 and only has 2 valance electrons?
The element that has a mass number of and two valence electrons is an isotope of calcium.
Is helium an ion?
Yes helium is an atom. It is stable. It is placed in group 18.Yes, helium is a monoatomic molecule. It is stable itself as it has already achieved maximum possible electrons in its outermost shell. It is the only element in group 18 without 8 electrons in valence shell.
How many valence electrons are in calcium plus chlorine?
the valence of CaCl2 is 2 because its not necessary that CaCl2 is always attached in hydrated form...... the basic thing which u study in your school classes that the outermost shell of both the element must be completed. so cacl2 has the valency of 2 because ca is electropositive. think it
What element has a stable 2 valence electrons?
Calcium.
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.
Have two valence electrons and get to a stable electron configuration by using two electrons?
an element with 2 valence electrons can obtain a stable electron configuration by "kicking out" two electrons to have the same electron config as the noble gas in the previous period
How many valance electrons does helium have?
Helium has two valence electrons. It is the only noble gas not to have eight valence electrons. Helium has the electronic configuration 1s2.The Noble gases have eight valence electrons in their outer shell.
How does sulfur forms its ion?
ions are formed based upon the valence electrons of the element and if the element is a metal or a nonmetal. S has 6 valence electrons and needs 2 more to be stable. it is a nonmetal. therefore, taking on 2 electrons gives S a -2 charge
How many valence electrons do stable atoms have?
A stable atom has 8 electrons in its outer most valence shell. A simple way to remember this is that all atoms want to be like the noble gases which all have 8 electrons (except helium but the reason is complicated and not necessary here)
What is the number of valence electrons the element helium has?
Helium has 2 electrons (total of 2 electrons and 2 valence electrons)
How many valence electrons will make an element stable?
The number depends on what will fill the outer shell. It can be 2 or 8.
How many valence electron level does an element have?
Except for elements 1 and 2, all elements are stable with how many electrons in their outermost (valence) level?
How many valence electrons will make an element chemically stable?
The number depends on what will fill the outer shell. It can be 2 or 8.
What element has 2 valence electrons and 4 protons?
Beryllium (Be) has 4 protons and 2 valence electrons.
How many electrons does the element Be have in it?
4 electrons, 2 valence electrons
