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sp2606 [1]
4 years ago
13

Determine if the bond between each pair of atoms is pure covalent, polar covalent, or ionic. drag the appropriate items to their

respective bins. br-br n-o p-h k-o
Chemistry
1 answer:
dsp734 years ago
6 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 Pure Covalent

                

                Between 0.4 and 1.7 then it is Polar Covalent 

            

                Greater than 1.7 then it is Ionic

 

For Br and Br,

                    E.N of Bromine      =   2.96

                    E.N of Bromine      =   2.96

                                                   ________

                    E.N Difference             0.00         (Non Polar/Pure Covalent)

 

For N and O,

                    E.N of Oxygen      =   3.44

                    E.N of Nitrogen     =   3.04

                                                   ________

                    E.N Difference             0.40           (Non Polar/Pure Covalent)

 

For P and H,

                    E.N of Hydrogen       =   2.20

                    E.N of Phosphorous  =   2.19

                                                              ________

                    E.N Difference                  0.01          (Non Polar/Pure Covalent)

 

For K and O,

                    E.N of Oxygen          =   3.44

                    E.N of Potassium      =   0.82

                                                   ________

                    E.N Difference                2.62              (Ionic)

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Answer:

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Explanation:

The nuclear fuel at Chernobyl was uranium-235. However, one of the decay products of uranium-235 is radium.

Radium is chemically similar to calcium since it has two valence electrons and is the heaviest and last member of group 2.

Owing to its chemical similarity to calcium, it was able to replace calcium in people's teeth and bones. Radium is radioactive, the half life of Ra-226 is about 1602 years.

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8 0
3 years ago
What forms of matter exists that are not made of chemical bonds?
zepelin [54]

Mixtures

Explanation:

The forms of matter that exists without having chemical bonds between them are mixtures.

Mixtures are impure substances. They are made of matter that are not chemically bonded to one another.

Here are some of the characteristics of a mixture:

  • Composition is indefinite i.e they consist of two or more elements and or compounds in any proportion by mass
  • The constituents retain their identities i.e physical properties are not altered.
  • The constituents reacts differently to changed conditions.
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Many natural mixtures exists and several others can be formulated. Examples include air, sea-water, muddy water, alloys e.t.c

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8 0
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The period of an osciller is 2.34 minutes. What id the frequency of this oscillator in hertz?
AleksAgata [21]

Explanation:

Given parameters

Period = 2.34minutes

Unknown:

Frequency of the oscillator = ?

Solution:

Frequency is the number of waves that passes through a point at a given time. It is the inverse of period which is the time it takes for a wave to pass through a medium:

             F = \frac{1}{T}

F is the frequency

T is the period

      To solve this, convert the period to seconds:

              2.34minutes to seconds:

                1 min = 60seconds

              2.34 =  60 x 2.34 = 140.4s

F = \frac{1}{140.4} = 0.007hz or 0.007s⁻¹

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