First of all , what is 'c2h6o'??? If you mean C2H6O , then the formula is usually written as

CH3CH3OH

CH3CH2OH is ethanol ( acetyl alcohol) The alcohol that humans frink in beers, wines, and spiritis.

It is a COVALENT molecule.

It does not have ionic tendences.

However, the 'OH' functional group can be substituted for an halogen or amine.

NB When writing chemical formula . For single letter elemental symbols it is a CAPITAL letter 'C' for carbon, not 'c' . Similrly 'H' & 'O'. For two letter

symbols , first letter is a capital letter and the second leetter is small/lower case. e.g. 'Na' ( Sodium' Latin for Nadium).

NNB You misunderstand between 'Ionic' and 'Molecular'. All substances are 'molecules'. The bonding within substances can be either 'Ionic' or 'covalent'.

Na^(+) + Cl^(-) = NaCl(s)

Calcium and Phosphorus combined would be Calcium Phosphide , its formula is Ca3P2

Covalent.

CH3-Cl = chloromethane

CH2-Cl2 = di-chloromethane

CH-Cl3 - tri-chloromethane

CCl4 = tetrachloromethane.

All the bonds are covalent. However, because of chlorines strong electronegativity , the electrons in the C-Cl bond polarise towards the chlorine.

It has both .

Na3PO4 separates into 3Na^(+) & PO4^(3-_/

The sodium to phosphate bond is IONIC.

However, the oxygen to phosphorus bond in the phosphate anion is COVALENT.

There are millions of covalently combined compounds.

However, the two simplest are water and carbon dioxide.

Often represented by Water (H2O) ; H-O-H , and Carbon Dioxide (CO2) ; O=C=O

The lines between each atoms indicate the number of COVALENT bonds formed between atoms.

Zirconium is No. 40 in the Periodic Table.

The '40' tells us the position of zirconium in the table, the number of protons in an atom , and the number of electrons in a neutrally charged atom.

So the answer to you question is '40'.

It is a COMBUSTION reaction.

However, if you just mix the two gases they do not react. Activation energy is needed in the form of an external flame.

What is 'CaCl' ??? If you mean calcium chloride, then the formula is 'CaCl2'.

Lithium fluoride is a chemical salt , equivalent to sodium chloride.

Reason /

Both lithium and sodium are in Group (I) of the Periodic Table and lose (ionise) one electron.

Both fluorine and chlorine are in Group(VII) of the Periodic Table and gain one electron

Both salts combine ionically. Both salts are white and rystalline

Both salts readily dissolve in water.

This compound is hypothetical and is not possible it is P4O10

Double bonds. Each oxygen is doubly bonded to the carbon. It is structurally represented by ( O=C=O ).

YES!!!

KNO3 can be divided into the ions 'K^(+)' and 'NO3(-)'.

Within the anion 'NO3(-)' the nitrogen and oxygens are bonded covalently.

TNT is 'tri-nitrotoluene'.

This is a benzene ring of 6 carbons.

On Carbon No. 1 the is a CH3 group

On carbons No's. 2,4 & 6 there are three NO2 group .

The remaining two carbons viz, 3 & 5 , have an hydrogen attached.

So the elements present are Carbon, Hydrogen, Nitrogen and Oxygen.

The formula is C7H5N3O6

The bond angle in HOCl (HClO) is approximately 104.5 degrees, similar to that of water (H2O), due to its bent or V-shaped molecular geometry.

NO!!! It is a compound of hydrogen and sulphur. The bonds between hydrogen and sulphur are covalent.

H2S ( hydrogen sulphide) is the sulphur analogue of water.

H2S is the bad eggs smell that is given off from rotten eggs.

Carbon and oxygen as CO2 ( O=C=O)

or carbon and hydrogen , as CH4

or oxygen and hydrogen , as H2O ( H-O-H)

or nitrogen and hydrogen as NH3

or sulphur and ixygen as , SO2 ( O=S=O)

Are just a few pairs of atoms that form covalent compounds. There are many more pairs. However, as a general rule any pair of atoms from the right of the Periodic Table form covalent compounds.

Metallic elements to the left and centre of the Periodic Table tend to form ionic compounds.

Here is the BALANCED reaction eq'n.

2H2(g) + O2(g) = 2H2O(l)

The prefix number are the Molar Ratios 2:1::2

So oxygen is ONE(1) mole

Hence hydrogen is TWO(2) moles

It produces TWO(2) moles of water.

Bromine, like Fluorine and Chlorine, is an Halogen. Halogens gain an electron to become X^(-) anion.

'X' being the general symbol for an halogen.

NO!!! It is TWO(2) ionic bonds.

CaCl2 = Ca^(2+) + Cl^(-) + Cl^(-)

Definitely IONIC. Because if there were no ions present, then charge would not move, hence no electric flow.

Molecules formed by covalent bonding include water (H₂O), methane (CH₄), and oxygen (O₂), where atoms share electrons to achieve a stable configuration.

It is neither!!!!!

Neon is monatomic gas. That is a gas that exists as single uncombined atoms.

Ionic or Covalent means the type of bonding betyween atoms.

YES!!!!

KCl = K^(+) + Cl^(-)

There are a couple of things that cause specific lines to appear in a line spectrum. Two of these things are density and wavelength.