There are two reasons for that. Non metals do not have octet of electrons on their valence shell. Addition of electrons help them satisfy octet tule. Non metals have high electron affinity and hence high tendency to gain electrons.
Covalent compounds form between nonmetals by sharing electron pairs to achieve a stable electron configuration. This sharing of electrons allows both atoms to fill their outer electron shells and form a stable molecule.
Two nonmetals would typically form a covalent bond, where they share electrons to achieve a stable electron configuration. This type of bond occurs when atoms are both trying to gain electrons to fill their outer electron shells.
Bromine needs 1 more electron to fill its valence shell, as it has 7 valence electrons and typically follows the octet rule to achieve a full valence shell with 8 electrons.
The atomic number for hydrogen (H) is 1 in the Periodic Table of Elements and it has that number of electrons (Valence & otherwise). Hence H2O for water since Oxygen O needs 2 electrons added to its valence electrons to make the stable compound WATER.
Hydrogen has one electron and needs one more. Helium has two electrons and has filled shell. Carbon needs four more electrons to fill the valence shell Oxygen needs two more electrons to fill the valence shell
There are two reasons for that. Non metals do not have octet of electrons on their valence shell. Addition of electrons help them satisfy octet tule. Non metals have high electron affinity and hence high tendency to gain electrons.
;need the same number of electrons to fill their valece shells ;have the same number of valence electrons
Covalent compounds form between nonmetals by sharing electron pairs to achieve a stable electron configuration. This sharing of electrons allows both atoms to fill their outer electron shells and form a stable molecule.
The closer the number of valence electrons is to the number required to completely fill or deplete its outer shell the more likely the atom is to react. With other electrons in an atom the shells are full and they have little if any affect on the reactivity of an atom. Valence electrons are the only electrons that are available to be shared/transferred in a bond.
Nonmetals have high electronegativity and tend to hold onto their electrons tightly, making it difficult for them to become free and conduct electrical energy. Additionally, nonmetals typically have more filled electron shells, which decreases their likelihood of participating in electron transfer for conductivity.
Elements in the same group have the same number of valence electrons, which determines their chemical properties. This leads to similarities in reactivity and chemical behavior among elements in the same group.
The positive and negative are attracted
Two nonmetals would typically form a covalent bond, where they share electrons to achieve a stable electron configuration. This type of bond occurs when atoms are both trying to gain electrons to fill their outer electron shells.
No it does not, there are shells and orbitals that determines how reactive an atom is. Helium has 2 valence electrons, which fill up its entire shell, so it is like a noble gas. the other noble gasses have 8 valence electrons, which fill up their entire shell.
Bromine needs 1 more electron to fill its valence shell, as it has 7 valence electrons and typically follows the octet rule to achieve a full valence shell with 8 electrons.
it has 7 valence electrons, which is the number of electrons on the outer energy level, so it needs 7.