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Which of the following statements are true about whether atoms tend to gain or lose electrons?
Atoms with eight valence electrons usually do not gain or lose electrons. Atoms with one, two, or three valence electrons will lose electrons.
Why do atoms form positive ions and others form negative ions?
It is a matter of how full an atom's outer or valence shell of electrons is. For most atoms, the most stable setup is one with a full shell of 8 valence electrons, and an atom will gain or lose electrons to achieve this. For atoms with close to 8 valence electrons, such a chlorine (7 valence electrons, it is generally easier to gain electrons and thus become negatively charged. For atoms with few valence electrons, such as sodium (1 valence electron), it is easier to lose electrons and go down to the next lowest shell, which is already full.
How are valence electrons related to stability?
Valence electrons are the outermost electrons in an atom, and they determine the atom's chemical properties. Atoms with a full valence shell of electrons tend to be stable because they have a lower energy state. Atoms will gain, lose, or share electrons to achieve a full valence shell, which increases their stability.
What are atoms valence electrons?
the electrons on their outer shell, all atoms want to gain a full valence shell.
How can an atom that has 5 valence electrons achieve a full set of valence electrons?
An atom with 5 valence electrons can achieve a full set of 8 valence electrons by either gaining 3 electrons through bonding with other atoms or losing 5 electrons by forming ionic bonds. Another option is to share electrons with other atoms through covalent bonding to reach a stable octet.
What states that atoms tend to gain lose or share electrons in order to achieve a full set of valence electrons typically?
The octet rule.
How with 4 valence electron will achieve a full set of valence electron?
An atom with 4 valence electrons will have to either gain 4 electrons or lose 4 electrons to achieve a full set of eight electrons.
The goal of valence for an atom is?
The goal of valence for an atom is to achieve a full outer shell of electrons, typically 8 electrons (the octet rule), to become more stable and achieve a lower energy state. Atoms can achieve this by forming chemical bonds with other atoms through sharing, gaining, or losing electrons.
What chemical do valence electrons make when sharing?
Molecules or covalent compounds are formed by the sharing of valence electrons.
How many valence electrons are needed to achieve a full outer shell?
It depends, most atoms need 8 total valence electrons in their outer shell (some need 2). So subtract the number they have (determined by the group that the element is in) from 8 and that is how many they need to fill their outer shell!
What does a sulfur atom need to do to have a full valence level?
A sulfur atom needs to gain two electrons or share electrons with other atoms to have a full valence level. Sulfur has six valence electrons and can achieve stability by forming two additional bonds.
True or false if valence electrons are shared between atoms the bond is said to be covalent?
True. In a covalent bond, atoms share valence electrons to achieve a full outer shell and form a stable molecule.
