0
What have a full set of electrons on their outermost energy level?
Wiki User
∙ 8y ago
The noble gases (group 18/VIIIA/0) are naturally occurring elements that have a full valence shell with eight valence electrons (an octet), except for helium which has two valence electrons (a duet). This makes these elements very stable and very nonreactive.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Why does magnesium have an ionization number of 2?
Magnesium is in group 2 of the Periodic table, and so has 2 electrons in its outermost energy level. Therefore, its outermost energy level is full once 2 electrons are removed, and so it has an ionisation number of 2
How many valence electrons does helium need to gain to have a filled outermost energy level?
0 It already is full
An atom in which the outermost level is more than half tends to form is which ions?
An atom in which the outermost energy level is more than half full tends to fill its outermost energy level by adding one or more needed electrons. Such an atom forms a negative ion.
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium is already full. Helium atoms only need 2 electrons to be full, and Helium, as an element, already has 2.
The second energy level contains how many electrons when it is full?
The second energy level contains eight valance electrons when it's full.
What is the outermost energy level of an atom is considered full if the level contains?
Outermost energy level is full if there are 8 electrons in the valence shell.
Explain how valence electrons in an atom are used to form a full outermost energy level?
The electrons on the outermost energy level of the atom are called valence electrons.
A helium he atom has 2 electrons that are both in the outermost energy level how many more electrons does the atom need to fill its outermost energy level?
It is the most stable element in the universe and does not need anymore electrons. Its outermost energy level is full.
What element could have two electrons in their outermost level and be full?
Helium has only 2 electrons and its energy level is full.
Does helium has a full outermost energy level with two electrons?
Yes it does.
What atom has a full outermost energy level that contains two electrons?
helium
Which element has a full outermost energy level containing two electrons?
Helium (He)
How do atoms like their outermost energy level?
They can either gain, share, or lose electrons to have a full energy level
What does atoms have to do to fill the outermost energy level?
they need to either gain or lose electrons to create an octet. It depends on the atom. an octet is when an atom has a full outermost energy level
Why does magnesium have an ionization number of 2?
Magnesium is in group 2 of the Periodic table, and so has 2 electrons in its outermost energy level. Therefore, its outermost energy level is full once 2 electrons are removed, and so it has an ionisation number of 2
How many valence electrons does helium need to gain to have a filled outermost energy level?
0 It already is full
How can atoms with fewer than 8 valence electrons fill their outermost energy level Use either sulfur or magnesium to explain the process?
An atom of magnesium has two valence electron. It can have a full outer level by losing two electron. The second energy level becomes the outermost energy level with eight electrons.
