Which is the most stable ion?
Which is the most stable ion?
The most stable ion is :
- A. [Fe(C2O4)3]3−
- B. [Fe(Cl)6]3−
- C. [Fe(SCN)6]3−
- D. [Fe(H2O)6]3+
How do ions become stable?
Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable.
What is a stable ionic compound?
A stable ionic compound is electrically neutral, where electrons are shared between cations and anions to complete outer electron shells or octets. You know you have the correct formula for an ionic compound when the positive and negative charges on the ions are the same or “cancel each other out.”
What is a stable atom?
An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom’s nucleus may result from an excess of either neutrons or protons.
What is the most stable atom?
noble gases
What is the last stable element?
lead
Which element has longest half-life quizlet?
Which of the following isotopes has the longest half-life? Radium-226.
Which of the following has the longest half-life?
Bismuth-209 (209Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of amu (atomic mass units).
Which element can achieve stability in a compound without achieving an octet of electrons?
Hydrogen
Why do 8 electrons form a stable shell?
A complete octet is very stable because all orbitals will be full. Atoms with greater stability have less energy, so a reaction that increases the stability of the atoms will release energy in the form of heat or light. A stable arrangement is attended when the atom is surrounded by eight electrons.
Why is Magic Number 8 valence electrons?
The Octet Rule was formulated from the observation that atoms with eight valence electrons were especially stable (and common). These “magic numbers” are natural occurrences in isotopes that are particularly stable. …
What are the two different charges of ions?
Such species are called ions. Species with overall positive charges are termed cations, while species with overall negative charges are called anions. Remember that ions are formed only when electrons move from one atom to another; a proton never moves from one atom to another.
Why do atoms want to be like noble gases?
Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.
Do atoms want to be stable?
Atoms become stable if they get the nearest inert gas configuration . They do this by losing , gaining or sharing electrons to ,from or with other atoms . Loss or gain of electrons ,make these particles positively or negatively charged . The charged particles are called ions .
What happens if an atom is unstable?
Radiation is emitted from atoms when an unstable atom decays to become more stable. When an atom has extra neutrons or protons, it causes the element to become unstable.
Why do atoms become stable?
Many atoms become stable when their valence shell is filled with electrons or when they satisfy the octet rule (by having eight valence electrons). If atoms don’t have this arrangement, they’ll “want” to reach it by gaining, losing, or sharing electrons via bonds.
Do atoms want to be neutral?
Atoms are neutral if they have the same number of charged protons and electrons, balancing positive and negative charges. This is because water itself has slight charges. Answer 7: Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged).