Answer: When a pair of electrons is shared equally between two atoms, the bond formed is called a: pure covalent bond.
I have used the word pure to enphatize that the pair of electrons is shared equally. Some, bonds share the electrons unequally, yet they are covalent but they are polar. When the pair is shared equally the bond is purely covalent.
Also, you must know that covalent bonds may be single (one pair of electrons is shared), double (two pair of electrons are shared) or triple (three pair of electrons are shared).
The bowl of mixed fruits is a mixture because there are several things making up the object. Hence, option (B) is correct.
What is a mixture?
- The matter is categorized as mixtures and pure substances.
- A mixture is defined as a combination of substances that are not chemically mixed.
- A mixture can exist in solid, liquid, or gas form.
- A mixture can exist in the same or in a different phase. It can be homogenous or heterogeneous.
- If the substances are combined in the same phase, then the mixture is a homogeneous mixture.
- But if the substances are combined in different phases, then it is a heterogeneous mixture.
Therefore, the mixed fruit bowl is a mixture, because there are several things making up the object.
Hence, option (B) is correct.
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Answer:
The electronengativity values of given elements is as follows.
Fluorine - 4
Chlorine -3
Bromine - 2.9
Iodine- 2.5
Explanation:
Electronegativity =consant (I.E-E.A)
The electron affinity and ionization energy values of the given elements is as follows.
(In attachment)
First we have to find the value of constant by using the fluorine atom to whom the electronengativity taken as "4".
<u>Fluorine:</u>
![4=constant[1678-(-327.8)]](https://tex.z-dn.net/?f=4%3Dconstant%5B1678-%28-327.8%29%5D)
By using this constant values we can find electronegatvity values of remaining elements.
<u>Chlorine:</u>
![Electronegativity=0.0019942168[1255+348.7]=3.1980\sim 3](https://tex.z-dn.net/?f=Electronegativity%3D0.0019942168%5B1255%2B348.7%5D%3D3.1980%5Csim%203)
Therefore, electronegativity of chlorine is 3.
<u>Bromine:</u>
![Electronegativity=0.0019942168[1138+324.5]=2.91\sim 2.9](https://tex.z-dn.net/?f=Electronegativity%3D0.0019942168%5B1138%2B324.5%5D%3D2.91%5Csim%202.9)
Therefore, electronegativity of bromine is 2.9.
<u>Iodine:</u>
![Electronegativity=0.0019942168[1007+295.7]=2.59\sim 2.5](https://tex.z-dn.net/?f=Electronegativity%3D0.0019942168%5B1007%2B295.7%5D%3D2.59%5Csim%202.5)
Therefore, electronegativity of iodine is 2.5.
Answer:
A spectator ion is an ion that does not participate in a chemical reaction and is found in a solution before and after a reaction.
Hope this helped :)
