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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.
What else can I help you with?
Number of electrons in the outer orbit of an atom of lithium?
A neutral atom of lithium has an electron configuration of 2,1. This means it has 1 electron in its outer shell.
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.
What is the symbol for one element that DOES NOT need eight electrons to have full set of valence electrons?
An element that does not require eight electrons for a full set of valence electrons is represented by the element symbol B. Boron only needs six electrons to complete its valence shell and achieve stability.
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.
Which element has a full outermost energy level contining only two electrons?
Helium has a full outermost energy level containing only two electrons.
What element could have two electrons in their outermost level and be full?
Helium has only 2 electrons and its energy level is full.
An atom is stable when its outermost orbit is?
An atom is stable when its outermost orbit, or valence shell, is complete with the maximum number of electrons it can hold according to the octet rule. This typically means having eight electrons for most elements, except for hydrogen and helium which only need two electrons in their outer shell to be stable.
How many electrons would you need to fill the outermost ring of hydrogen?
Hydrogen need 1 more electron to fill outermost orbit. Then, H will act as anion.
Number of electrons in the outer orbit of an atom of lithium?
A neutral atom of lithium has an electron configuration of 2,1. This means it has 1 electron in its outer shell.
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium atoms only need 2 valence electrons to have a filled outermost energy level because helium is in the first period of the periodic table and its outermost energy level can only hold a maximum of 2 electrons.
How many electrons are in the outermost shell of helium?
only 2 electrons.
How many valence electrons does heluim need to have a filled outermost energy level?
Helium only needs two electrons to have a filled outermost energy level.
What is the number of electrons in the outermost energy level of fermium?
Only two electrons.
The valence electrons largely determine the chemical properties of an element and are usually the only electron used in?
The valence electrons are involved in forming chemical bonds between atoms. They determine an element's reactivity and ability to combine with other elements to form compounds. In general, only the outermost electrons, known as valence electrons, participate in chemical reactions.
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.
Electrons are those found in the outermost energy level of an atom?
Electrons found in the outermost energy level of an atom are called valence electrons. These electrons are involved in forming chemical bonds with other atoms, which determines the atom's reactivity and behavior in chemical reactions. The number of valence electrons an atom has contributes to its position in the periodic table and helps predict its chemical properties.
