Generally a covalent bond is formed by the sharing of the electrons.
molecular orbital.
nonmetal with nonmetal pair of electrons is shared between 2 atoms
You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.
The atoms in the valance shell. The atoms furthest from the nucleus. ( ' highest ' )
they tell us if the substance is stable or not
As metals have to become metal ions in order to chemically combined with nonmetals they have to lose their valance electrons. This process is associated with making the atoms smaller.
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Valance electrons.
electrons are transferred from the metal atoms to the non-metal atoms forming ions resulting in an ionic compound
molecular orbital.
nonmetal with nonmetal pair of electrons is shared between 2 atoms
chocolate
You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.
You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.
The outer shell electrons of the atom form covalent bonds.
The answer is Valance Electrons. Electrons are negatively charged particles which exist in atoms. See link for more detail.
Valance electrons means that the element has not reached the octet configuration and is therefore reactive the reactivity depends on the no. of valance electrons the more valance electrons the more unstable the atom is and the more reactive it is.The gasses like helium neon xenon are all inert which means they have an octet configuration and have no delocalised or valance electrons.