In which set do all elements tend to form anions in binary ionic compounds? li, na, k n, o, i c, s, pb k, fe, br?
2 answers:
Atoms or molecule after gaining of electron possesses negative charge and is known as anion.
For the given sets:
The given elements are alkali metals and have tendency to lose electrons easily and form cations.
The given elements are non-metals and are electronegative. So, they gain electrons easily and form anion.
Carbon has tendency to form bond by sharing of electrons, Sulfur has tendency to gain electrons and form anion whereas Lead has tendency to lose electron.
Potassium and Iron has tendency to lose electron and form cation whereas Bromine has tendency to gain electron to form anion.
Hence, from the given sets, all elements of set: have tendency to form anions in binary ionic compounds.
The elements tend to form anions in binary ionic compounds are elements O, S and I
<h3>Further explanation</h3>Ions are atoms that have a charge
Ions are formed because events are capturing or releasing electrons.
Ions can be differentiated based on the number of constituent elements they become
- 1. monatomic ion, if it comes from one element, such as K⁺, Mg²⁺, Cl⁻
- 2. polyatomic ion, if it comes from two or more elements such as PO₄³⁻, SO₄²⁻, ClO₃⁻
Based on the charge, ions can be divided into:
- 1. positive ion (cation)
happens if the atom releases electrons, for example
Al³⁺, ---> Al⇒ Al³⁺ + 3e⁻
Pb²⁺, ----> Pb⇒ Pb²⁺ + 2e-
- 2. negative ion (anion)
happens if the atom captures electrons, like
S²⁻, S + 2e⁻⇒ S²⁻
F⁻, F + e⁻⇒ F⁻
For ionic compounds consisting of cations (ions +) and anions (ions -)
The naming is preceded by the cation then the anion with the -ide suffix added
Generally for this ion compound consists of metal elements as cations and non-metals as anions
Binary ionic compounds are formed from 2 different atomic elements, namely metal and non-metal
From some of these ions
Li, Na, K, N, O, I, C, S, Pb, Fe, Br
- 1. elements Li, Na, K (all three groups IA), Fe (transition group, VIIIB) and Pb (group IVA) are metals that tend to form positive ions (cations)
Li⁺, Na⁺, K⁺, Fe²⁺ / Fe³⁺, Pb²⁺, Pb³⁺
- 2. elements O, S (class VIA), I (class VIIA) are non-metals which tend to form negative ions (anions)
O²⁻, S²⁻, I⁻
- 3. elements C (group IVA) and N (group VA) are non-metals which tend to form polyatomic negative ions (anions)
NO³⁻, NO²⁻, CO₃²⁻, C₂O₄²⁻
So the elements tend to form anions in binary ionic compounds are elements O, S and I
<h3>Learn more</h3>The net ionic equation
ion stability
ionic bonding
Keywords: binary ionic compounds, elements, cations, anions, polyatomic, monoatomic
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