answersLogoWhite

0


Best Answer

The answer is to do with electronegativity difference. Metals generally have low values and non metals higher values. When an element with a low value combines with an element with a high value, usually the element with the low value LOSES electrons to form a positive ion while the other element gains the electron(s) and forms a negative ion. So an ionic compounds is formed. Compoiunds of this type usually contain a metal elements joined to non-metal element - so compounds 2 and 3 in your list are ionic.

When the compound is made from only non-metal elements, electrons are not lost or gained but shared as these elements tend not to lose electrons or gain them. Instead they share electrons to make covalent bonds. If the result are small structures they will be molecular eg 1 and 4 in your list.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

7y ago

C3H8, Cl2O

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Which of the compounds c3h8 mgcl2 znno32 ocl2 are expected to exist as molecules?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Do ionic compounds exist as molecules?

no


Why elements and all compound exist as molecules?

All elements and all compounds do not exist as molecules. As examples, noble gases exist as individulal atoms and ionic compounds form lattices.


Organic compounds exist as discrete molecules with much weaker intermolecular forces than those seen in ionic compounds?

Organic compounds exist as discrete molecules with much weaker inter molecular forces than those seen in ionic compounds?


Can molecular compounds exist as separate molecules due to covalent bonding?

yes it can


What are the characteritics of covalent compounds?

Covalent compounds usually exist as small, seperate molecules. Although there are exceptions such as diamond and graphite.


What evidence is there ionic compounds exists as ions in their pure state while molecular compounds exist as molecules in their pure state?

Ionic compounds conduct electricity while molecular compounds do not


Why ionic compounds don't exist in form of molecules?

I'm on dat good kush and alcohol.


How can molecular compounds be distinguished from ionic compounds?

Many ionic compounds exist as crystals but covalent compounds as molecules (there are exceptions as diamond though). Ionic compounds would be good electrical conductors unlike molecular compounds.


Does Aluminum exist by itself or does it have to be in a compound or molecule?

Aluminum is an element, composed of molecules, is on the periodic chart, does exist by itself AND can be combined to form compounds.


Why is all compounds molecules?

All elements and compounds are present in molecular state. They cannot be found as individual atoms. Atoms cannot exist in free state.


Are there any molecules or formulas for neon?

Under normal conditions of temperature and pressure, neon forms no elemental molecules. It can possibly form compounds with some other, extremely electronegative, elements. These compounds, if they exist, would have formulas.


What alkali metal is diatomic?

No metals form molecules; they only exist as ionic compounds or metallic elements or alloys.