0
Is there any element which has only two electrons in the outermost orbit?
Wiki User
∙ 12y ago
Yes. Helium and the group 2 metals. Berylium, Magnesium, Calcium.
It gets a bit murkier further down the Periodic Table, the difference between the p and d orbitals are small and electrons jump about a bit between them.
So stick to the three above as clear examples of elements with two electrons in the outer shell.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How does silicon become stable?
Elements get stable only when it completes electron octate in its outermost orbit. Elements make compounds with other elements to gain or reduce electrons to get stability. silicon make bonds with oxygen and make silicon dioxide to get stable.
What neutral atom is isoelectronic with nitrogen?
Nitrogen (N) has 7 electrons in total. 2 in its first orbit and 5 in its second orbit (only has two orbits because it is in the second period of the periodic table). For a full, outer shell/orbit (8 electrons), it needs 3 more electrons.5+3 = 8Nitrogen has a charge of 3- which means it needs 3more electrons. If you add how many electrons it has gainedto the total number of electrons Nitrogen has (7) then you will find the element it is isoelectronic with.7+3 = 10Now find the element with 10 electrons (# of electrons = # of protons & # of protons = the atomic number of an element).Neon (Ne) on the periodic table has an atomic number of 10 so therefore, Ne/Neon is the isoelectronic atom with Nitrogen.
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 orbitals does helium have?
Helium has only two electrons, and they share one orbital (forming a complementary pair).
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.
What element could have two electrons in their outermost level and be full?
Helium has only 2 electrons and its energy level is full.
How many electrons would you need to fill the outermost ring of hydrogen?
The outermost ring of hydrogen, or the first energy level, can only hold a maximum of 2 electrons.
Electrons are those found in the outermost energy level of an atom?
Electrons are those found in the outermost energy level of an atom?They are called valence electrons.
How many electrons are in the outermost shell of helium?
only 2 electrons.
How does silicon become stable?
Elements get stable only when it completes electron octate in its outermost orbit. Elements make compounds with other elements to gain or reduce electrons to get stability. silicon make bonds with oxygen and make silicon dioxide to get stable.
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.
What are valence electrons and how do they relate to the noble gases?
Valence electrons are electrons in the outermost shell (or outermost energy level or outermost orbital) in an atom. Noble gases have 8 valence electrons. But helium (a noble gas) has only 2 valence electrons.
How many valence electrons does heluim need to have a filled outermost energy level?
Helium only needs 2 valence electrons to have a filled outermost energy level.
What is the number of electrons in the outermost energy level of fermium?
Only two electrons.
What are the electrons in the outermost she'll of an atom called?
Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.
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.
Is the krypton element stable or unstable?
no it is not stable bcoz if an atom needs to be stable it needs to have 8 electrons in the valency (outermost) shell,where as a krypton has only 2 in its valency electron.
