Question

what is cation write the symbols for sodium anion and calcium anion answer two marks​

Answer 1

Explanation:

in chemistry) an ion with a positive electrical charge

The symbol for a sodium ion is Na+1 or Na+. Sodium is an electropositive element with atomic number 11.

Calcium(2+) is a calcium cation, a divalent metal cation and a monoatomic dication. It has a role as a human metabolite and a cofactor.

Answer 2

Answer:

Here is your answer dear

Explanation:

Formed by

Metal atoms

Non-metal atoms

Examples

Sodium (Na+), Iron (Fe2+), Ammonium (NH4+)

Chloride (Cl-), Bromide (Br-), Sulfate (SO42-)

Metallic atoms hold some of their electrons relatively loosely. Consequently, they tend to lose electrons and form cations. Conversely, most nonmetallic atoms attract electrons more strongly than metallic atoms, and so gain electrons to form anions. Therefore, when atoms from a metallic and a nonmetallic element combine, the nonmetallic atoms tend to draw one or more electrons away from the metallic atoms to form ions. These oppositely charged ions then attract one other to form ionic bonds and produce ionic compounds with no overall net charge. Examples include calcium chloride (CaCl2), potassium iodide (KI) and magnesium oxide (MgO).

Cation vs anion periodic table

It can be possible to predict whether an atom will form a cation or an anion based on its position on the periodic table. Halogens always form anions, alkali metals and alkaline earth metals always form cations. Most other metals form cations (e.g. iron, silver, nickel), whilst most other nonmetals typically form anions (e.g. oxygen, carbon, sulfur). However, some elements are capable of forming both cations and anions given the right conditions. One example is hydrogen, which may gain (H-) or lose (H+) an electron, forming hydride compounds such as ZnH2 (where it is an anion) and hydron compounds such as H2O (where it is a cation).

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