ns^2
Only when they have identical electronegativities. Homogeneous metals such as iron only, all the atoms share electrons equally. When the electronegativities differ significantly in allows, the metals change their character. An example of this is steel, where soft and malleable iron becomes hard and brittle, because of the presence of other metals such as manganese.
This atom become a cation with a +2 electrical charge. All atoms have are neutral because the numbers of protons and electrons are equal. When you subtract any number n of electrons, the new charge is +n, just as a general rule.
The octet rule is a simple rule of thumb that states that atoms tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electron configuration as a noble gas. The rule is applicable to the main-group elements. In simple terms, molecules or ions tend to be most stable when the outermost electron shells of their constituent atoms contain eight electrons.ELECTRONS
What was the general tone of the question? How can I give a general answer to such a direct question?
The noun 'general' is a common noun unless it is the name of a specific general. Examples: common: A general must authorize these orders. proper: My new job is with General Motors. proper: General Dwight D. Eisenhower became the 34th President of the United States.
2 electrons in the outermost shell.
In general, you use the Aufbau Principle which indicates the order in which the shells and orbitals are filled. You just have to learn it and then you can determine the electron configuration of the elements.
Be (berylium) berylium Mg (magnesium) magnesium Ca (calcium) calcic Sr (strontium) strontium Ba (barium) baryum Ra (radium) radium All the elements' general valence electron configuration is ns2 "n" is a number from 2 (for Be) to 7 (for Ra).
these elements have 5 electron in the valence shells and have configuration of ns np5
ns^2np^3
The general electron configuration of the group having the lowest ionization energy is [Noble gas configuration]xs1. In this case, x is the principal quantum number of the valance electron. The noble gas configuration may either be written out in full or denoted by the noble gas' atomic symbol in brackets (ie [Ne]).
ns2np5
Valence electron configuration in group 1A: ns1 in which n=1, 2, 3, 4, 5, ... etc. Starting with Hydrogen, H, electron configuration: 1s1 followed by Lithium, Li, electron configuration: (1s2), 2s1 (non valence electrons in () brackets)
Fluorine has the electron configuration: 1s22s22p5, sometimes written as [He]2s22p5
Only 8 groups present in periodic table. Group1,2,3,4,5,7,0 Stealth 1991
they loose an electron to become stable hence are positively charged.They react with water to form stong bases
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