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Vedmedyk [2.9K]
3 years ago
8

Determine if a bond between each pair of atoms would be pure covalent, polar covalent, or ionic.

Chemistry
1 answer:
Elden [556K]3 years ago
7 0
Types of Bonds can be predicted by calculating the difference in electronegativity.
If, Electronegativity difference is,

                Less than 0.4 then it is Non Polar Covalent
                
                Between 0.4 and 1.7 then it is Polar Covalent 
            
                Greater than 1.7 then it is Ionic

For C and N,
                    E.N of Nitrogen      =   3.04
                    E.N of Carbon        =   2.55
                                                   ________
                    E.N Difference             0.49          (Weakly Polar Covalent)

For N and S,
                    E.N of Nitrogen      =   3.04
                    E.N of Sulfur          =   2.58
                                                   ________
                    E.N Difference             0.46           (Weakly Polar Covalent)

For K and F,
                    E.N of Fluorine       =   3.98
                    E.N of Potassium   =   0.28
                                                   ________
                    E.N Difference             3.70          (Ionic)

For N and N,
                    E.N of Nitrogen      =   3.04
                    E.N of Nitrogen      =   3.04
                                                   ________
                    E.N Difference             0              (Non Polar Covalent)
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Repulsion of electrons within two interacting molecules produces changes in electron distribution. This change in electron distr
ycow [4]

Answer:

D

Explanation:

This explains how two noble gases molecules can have an attractive force between them.

This force is called as van dar Waals forces.

It plays a fundamental role in fields in as diverse as supramolecular chemistry structural biology .

If no other forces are present, the point at which the force becomes repulsive rather than attractive as two atoms near one another is called the van der Waals contact distance. This results from the electron clouds of two atoms unfavorably coming into contact.[1] It can be shown that van der Waals forces are of the same origin as the Casimir effect, arising from quantum interactions with the zero-point field.[2] The resulting van der Waals forces can be attractive or repulsive.[3] It is also sometimes used loosely as a synonym for the totality of intermolecular forces.[4] The term includes the force between permanent dipoles (Keesom force), the force between a permanent dipole and a corresponding induced dipole (Debye force), and the force between instantaneously induced dipoles

6 0
3 years ago
Which reaction is a decomposition reaction? A. 2KClO3 → 2KCl + 3O2 B. 4Na + O2 → 2Na2O C. ZnS + 3O2 → 2ZnO + 2SO2 D. 2NaBr + CaF
Vedmedyk [2.9K]

Answer:

  • <em><u>Option A. </u></em><u><em>2KClO₃ → 2KCl + 3O₂</em></u>

Explanation:

There are five basic general types of chemical reactions:

  • Decomposition reactions
  • Synthesis or combination reaction
  • Single replacement reactions
  • Double replacement reactions
  • Combustion reactions

The given reactions are:

  • <u>2KClO₃ → 2KCl + 3O₂</u>

Which is, indeed, a decomposition reaction because the reactant, KClO₃, is a single substance that undergoes a reaction in which it yields two new substances, known as products: KCl and O₂.

  • <u>4Na + O₂ → 2Na₂O</u> is a synthesis or combination reaction because two reactants, Na and O₂, combine for the formation of one single new product, Na₂O.

  • <u>ZnS + 3 O₂ →  2ZnO + 2SO₂ </u>is a single replacement reaction because oxygen is replacing Zn and S in ZnS to form ZnO and plus SO₂.

  • <u>2NaBr + CaF₂ → 2NaF + CaBr₂ </u>is a double replacement reaction because two  ions (Br⁻ from NaBr and F⁻ from CaF₂) are exchanging places with other two ions (Na⁺ from NaBr and Ca²⁺ from CaF₂) two form two new ionic compounds (NaF and CaBr₂).
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Which type of organism helps return nutrients from dead plants and animals to the soil. A producer. B prey. C predator. D decomp
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The answer is D. Decomposer
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There are 2 different types of atoms there, that's why

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