Question

please give the answer​

Answer 1

Answer:

physical properties of metals and non metals are :

1. state

2.hardness

3.strength

4.lustre

5.ductility

6.malleability

7. sonority

2.a series in which metals are arranged in decreasing order of reactivity is called reactivity series

3.properties of ionic compound

they are good insulators

they form crystals

they have high melting and boiling points.

homework :

1. metals and non metals react with each other by forming ions .

2. ionic compounds is a chemical compound of ions held together by electro static force termed ionic bonding. the compound is neutral overall.

hope it helps you ✌️✌️

Answer 2

${\huge{\underline{\mathsf{\purple{1. \: Physical \: \: properties \: \: of \: \: metals \: \: and \: \: Non-Metals}}}}}</p><p>$

Physical Properties of Metals:-

• In physical property metals contains lustrous surface and can polished.

• Metals are solid and heavy, even though sodium, potassium, magnesium, aluminium etc. are comparatively lighter metals.

• Metals are excellent conductor of warm and electricity.

• Melting points and boiling points of metals are very high.

Physical Properties of Nonmetals:-

• Nonmetals have high ionization energies.

• They have high electronegativities.

• Nonmetals are insulators which means that they're poor conductors of electricity.

• They are dull, they do not have lustre like metals.

${\huge {\underline{\mathsf{\green{2. \: Reactivity \: \: series \: \: of \: \: metals}}}}}$

Metals in the middle of the reactivity series, such as iron, will react with acids such as sulfuric acid (but not water at normal temperatures) to give hydrogen and a metal salt, such as iron(II) sulfate: Fe (s) + H2SO4 (l) → FeSO4 (aq) + H2 (g)

${\huge {\underline{\mathsf{\pink {3. \: Properties \: \: of \: \: ionic \: \: compounds.}}}}}$

Ionic Compound Properties:-

1. Physical properties of ionic compounds

Due to the presence of the strong force of attraction between the positive and negative ions, ionic compounds are solids and are hard to break. They generally break into pieces when pressure is applied, hence they are considered brittle.

2. Melting and boiling points of ionic compounds

Due to the presence of electrostatic forces of attraction between ions, a large amount of energy is required to break the ionic bonds between the atoms. Thus, ionic compounds have high melting and boiling points.

3. The solubility of ionic compounds

Ionic compounds are generally soluble in polar solvents such as water whereas solubility tends to decrease in non-polar solvents such as petrol, gasoline, etc.

4. Conduction of Electricity

Ionic compounds do not conduct electricity in the solid-state but are good conductors in a molten state. Conduction of electricity involves the flow of charge from one point to another. In the solid-state, as the movement of ions is not possible, ionic compounds don’t conduct electricity. Whereas in the molten state, ionic compounds conduct electricity as electrostatic forces of attraction between the ions are overcome by the heat released.

${\huge{\underline{\underline{ \mathsf{\blue{Question \: 1}}}}}}$

How do metals and non metals react?

${\huge{\underline{\underline{\mathsf{\red{Answer \: 1}}}}}}$

Metals and non-metals react with each other by forming ions.

Explanation:

Metals are defined as the elements which loose electrons to attain stable electronic configuration. They attain positive charge and form cation.

Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. They attain negative charge and form anion.

Metals and non-metals form ionic bonds. These bonds are formed when complete transfer of electrons takes place from metals to non-metals.

Ionic compounds are formed by the electrostatic attraction of oppositely charged ions.

For Example: Formation of NaCL

When Na+ and Cl- ions react with each other, it leads to the formation of ionic compound known as sodium chloride.

Hence, metals and non-metals react with each other by forming ions.

${\huge{\underline{\underline{ \mathsf{\orange{Question \: 2}}}}}}$

What are ionic compounds?

${\huge{\underline{\underline{\mathsf{ \pink{Answer \: 2}}}}}}$

In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions.