Table of Contents
- 1 Are polyatomic ions unstable?
- 2 What makes a polyatomic ion stable?
- 3 Which ion is polyatomic anion?
- 4 How are polyatomic ions different from metallic ions?
- 5 Can an anion be a molecule?
- 6 What is formed when polyatomic ions bond with other ions?
- 7 Is sulfuric acid polyatomic or ionic?
- 8 What are polyatomic ions?
Are polyatomic ions unstable?
Polyatomic ions are generally very unstable and reactive. An common example of an ion is Na+. Sodium has a +1 charge because sodium has eleven electrons. However, according to the octet rule, sodium would be more stable with 10 electrons (2 in its inner most shell, 8 in its outermost shell).
What makes a polyatomic ion stable?
With one or more electrons added or removed, a stable structure results. Well-known examples of such polyatomic ions are the sulfate ion (SO42–), the hydroxide ion (OH–), The only difference is that the number of electrons in the ion does not exactly balance the sum of the nuclear charges.
Which does the polyatomic anion fall into atom or molecule?
Chastity Chapin, M.F.A. A polyatomic anion can be a confusing term. You might reason that it falls under the category of atom since you can spot “atom” in “polyatomic.” You might also reason that it’s a molecule since it refers to multiple atoms. Remember, a molecule is the product of multiple atoms.
What polyatomic ions have a 3 charge?
The most common polyatomic ion with a charge of 3- is phosphate which can be written as PO3−4 .
Which ion is polyatomic anion?
A polyatomic ion is an ion composed of more than one atom. The ammonium ion consists of one nitrogen atom and four hydrogen atoms. Together, they comprise a single ion with a 1+ charge and a formula of NH+4. The carbonate ion consists of one carbon atom and three oxygen atoms, and carries an overall charge of 2−.
How are polyatomic ions different from metallic ions?
Polyatomic ions are ions that are composed of two or more atoms that are linked by covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group. A metal plus a polyatomic ion yields an ionic compound.
Which of the following anions is polyatomic?
| Symbols and Names of Some Common Polyatomic Ions and One Molecule | ||
|---|---|---|
| NH4+ | ammonium ion | cyanide ion |
| HSO4- | hydrogen sulfate ion | thiocyanate ion |
| SO32- | sulfite ion | carbonate ion |
| NO3- | nitrate ion | hydrogen carbonate |
Why are polyatomic ions highly reactive?
Polyatomic ions have group of two or more elements combined with some charges. Always charged ions are more reactive than neutral one.
Can an anion be a molecule?
A cation is a positively charged ion with fewer electrons than protons while an anion is a negatively charged ion with more electrons than protons. Ions consisting of only a single atom are termed atomic or monatomic ions, while two or more atoms form molecular ions or polyatomic ions.
What is formed when polyatomic ions bond with other ions?
-covalent bonding holds the atoms together within the ion and ionic bonding joins the entire ion to other oppositely charged ions. polyatomic ions can join with single atom ions or other polyatomic ions to form ionic compounds.
Which polyatomic ion has a charge of 4?
Some ions consist of groups of atoms bonded together and have an overall electric charge. Because these ions contain more than one atom, they are called polyatomic ions….Polyatomic Ions.
| Name | Formula |
|---|---|
| permanganate ion | MnO4− |
| phosphate ion | PO43− |
| hydrogen phosphate ion | HPO42− |
| dihydrogen phosphate ion | H2PO4− |
How do you know the charge of polyatomic ions?
Calculate from Oxidation Number Add together the oxidation numbers of all the atoms in the polyatomic ion. In the example, -2 +1 = -1. This is the charge on the polyatomic ion. Write this charge as a superscript to the right of the ion’s formula.
Is sulfuric acid polyatomic or ionic?
Polyatomic Ionic Compound Sulfuric Acid Many common chemicals are polyatomic compounds with polyatomic ions. For example, sulfuric acid H 2 SO 4 contains H + and the polyatomic SO 4-2. The sulfur atom has six electrons in its outer shell.
What are polyatomic ions?
1 Definition of Polyatomic Ions. Polyatomic ions are covalently bonded groups of atoms and having a positive or negative charge caused by the formation of an ionic bond with another ion. 2 Structure of Polyatomic Ions. 3 Polyatomic Ionic Compound Sulfuric Acid. 4 Examples of Common Polyatomic Ions. 5 Solved Question for You.
How many electrons does so4-2 have?
The sulfate receives the two electrons to become SO 4-2. Polyatomic Ion NH 4+ or Ammonium: In most polyatomic ions, it contains oxygen and a negatively charged anions. Ammonium is one of the few positively charged polyatomic ions and doesn’t contain oxygen. Nitrogen has five electrons in its outermost shell, and it can have eight.
What is the difference between a cation and an anion?
(A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent ormolecular compounds form when elementsshare electrons in a covalent bond to form molecules.