What does Group 17 on the periodic table have in common?
What does Group 17 on the periodic table have in common?
Halogens are highly reactive nonmetal elements in group 17 of the periodic table. Halogens are among the most reactive of all elements. They have seven valence electrons, so they are very “eager” to gain one electron to have a full outer energy level.
Why do elements in group 17 have similar properties?
All halogens exhibit similar chemical properties. This is because all the atoms of halogens have 7 valence electrons.
What properties do the halogens have in common?
What are the similar properties of halogens?
- They all form acids when combined with hydrogen.
- They are all fairly toxic.
- They readily combine with metals to form salts.
- They have seven valence electrons in their outer shell.
- They are highly reactive and electronegative.
Is oxygen a mixture?
*Note: pure oxygen gas consists of molecules but it is still considered an element, rather than a compound, as the molecules are made up of a single type of element….Pure Substances.
| Pure Substance | Element or Compound? | Consists of: |
|---|---|---|
| Ammonia (NH3) | compound | ammonia molecules |
What is difference between symbol and formula?
Answer. We use symbols in chemistry. The difference between chemical symbol and chemical formula is that we use a chemical symbol to name a certain chemical element whereas a chemical formula is used in naming a chemical compound.
Why does oxygen have two atoms?
Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell. It gets these four from four hydrogen atoms, each atom providing one. These elements all share the electrons equally, creating four nonpolar covalent bonds.
What is the weakest intermolecular force?
The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an induced dipole-induced dipole attraction.
Why is hydrogen bonding the strongest?
Why is hydrogen bonding the strongest intermolecular force? – Quora. Because it involves highly electronegative (tendency of an atom to attract electrons) e.g. oxygen and chlorine. And hydrogen has only one electron, therefore is less negative (almost positive in a sense).