Berylium is a metal element. There are 4 electrons in a single atom.
4
There are four electrons in atomic beryllium.
Berylium with an electron structure of 1s22s2 has 4 electrons.
Beryllium has two valence electrons.
berylium has 4 protons. It has 4 electrons too.
2
The element you are referring to is beryllium (Be). Beryllium is an alkaline Earth metal that has two electrons in the second energy level.
The formula for a beryllium ion is Be2+. This indicates that the beryllium atom has lost 2 electrons, resulting in a 2+ charge.
Berylium is a non metal element. Atomic mass of it is 9.
4 protons and about 5 neutrons
When we say valence electron we mean the number of electron left it the outermost shell of element, valence electron can be positive of negetive. If an element need much electrons to be octet, that means that the element is not reactive than the one who will give out electrons, the the one who can give electrons much are less reactive than the one who can give a litle and the reaction will be normal as it is soppused to be, Eg lithium and berylium. Lithium is more reactive than berylium because lithuin has 1valence electron while berylium has 2....reactivity goes with the action of valence electron in an element
The orbital notation for beryllium (Be) is 1s^2 2s^2, representing the distribution of its 4 electrons into the first and second energy levels, with 2 electrons in the 1s orbital and 2 electrons in the 2s orbital.