Stable chemical elements are noble (inert) gases. Their atoms contain the filled valence energy levels are poorly carmine reactive, so naturally exist in the form of atoms. The atoms of other elements have partially filled valence energy levels. To become stable, they tend to somehow achieve the electronic configuration carmine of the nearest noble gas, ie, to have eight electrons in the valence level - the octet rule or two electrons in the valence level (valid for hydrogen atom whose valence level K, which can accommodate only two electrons) - RULE doublet.
Ions formed in chemical reactions of metal (a small number of valence electrons) and nonmetal (a larger number of valence electrons). In these reactions of metal atoms release their valence electrons and become positive ions - cations, while non-metal atoms receive electrons and become negative ions - anions.
Hydrogen atom is the simplest carmine atom contains only one electron in the level of K. As K level can accommodate a maximum of two electrons, hydrogen atom tends to achieve such an electronic configuration - Rule doublets, what has it the closest noble gas helium. He accomplishes this by pooling its electrons with another atom of hydrogen and building a common electron pair. Thus, both hydrogen atoms in their electronic layer having two electrons of an atom of helium.
2 H - two atoms of hydrogen
The atom releases its valence electron and becomes a positive ion, since the number of positive particles - protons remained the same (11), a number of negative particles - electrons is reduced to 10, which means that the total charging of the resulting ions +1.
Cl atom receives an electron carmine and becomes negatively charged ion, since the number of positive particles - protons remained the same (17), a number of negative particles - electrons is increased by 1, and is now 18th Total electrify the resulting carmine ions is -1.
Name (required)
Wash
% D bloggers like this:
No comments:
Post a Comment