The only neutral atom with two electrons is helium; however, lithium will lose one electron when becoming an ion to have two electrons. Hydrogen can also gain an electron (compounds called hydrides) to have two electrons also.
The orbital diagram for the element carbon shows two electrons in the 1s orbital, two electrons in the 2s orbital, and two electrons in the 2p orbital. This arrangement follows the Aufbau principle and Hund's rule.
Boron has 3 valence electrons.Boron has 3 valence electrons.
Actually the atomic number tells you how many protons there are. And there are 6 elements with 2 electrons. You can find out that out by looking at a periodic table and looking at family 2. Im guessing you won't be able to find the element your looking for unless you know the number of nuetrons or even better the number of protons.
Beryllium, Magnesium, Calcium, Strontium, Barium and Radium
The Element Neon has 10 protons and 10 electrons.
Helium
An element that has two outer electrons is carbon. Carbon would not use the energy to gain six more electrons when it can easily get rid of the two outer electrons.
NO. Isotopes are forms of an element that have the same numbers of protons and electrons, but differing numbers of neutrons. For example Helium-3 has two protons, two electrons, and one neutron and Helium-4 has two protons, two electrons, and two neutrons.A form of an element that has a different number of electrons than the number of protons is an "ion".
The element that contains only two 2p electrons is helium.
Helium
CARBON
Calcium (Ca) has two valence electrons.
The orbital diagram for the element carbon shows two electrons in the 1s orbital, two electrons in the 2s orbital, and two electrons in the 2p orbital. This arrangement follows the Aufbau principle and Hund's rule.
The element is sulfur with 16 electrons. It gains two electrons to form sulfide ion which has 18 electrons as that of argon.
Neon has two energy levels with 2 and 8 electrons in these.
Boron has 3 valence electrons.Boron has 3 valence electrons.
An element with two energy levels can have a maximum of 8 electrons. The first energy level can hold up to 2 electrons, while the second energy level can hold up to 6 electrons.