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Chemistry
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What and where are alkali metals in periodic table? Explain reactivity trends.

Alkali metal have 1 outer electrons. Reactivity increases down the coloumn.

ST
Answered by Sandeep T. Chemistry tutor
2482 Views

What evidences are used to prove that Benzene's kekule model is incorrect and that Benzene has a delocalised Pi structure.

The enthalpy Change of Hydration for cyclohexene is 120 kJmol-1 therefore if the Kekule model is correct then the Enthalpy change of Hydration would be 360 kJmol-1 however as it is c...

MA
Answered by Muin A. Chemistry tutor
6970 Views

Explain the polarity of both CH3CH2Br and CBr3CBr3.

Both molecules have a C-Br bond, which will be polar due to their difference in electronegativities (bromine is more electronegative than carbon). In CBr3CBr3 the dipoles cancel so the overall molecule is...

DD
Answered by David D. Chemistry tutor
20498 Views

State 2 features of a system that is in dynamic equilibrium.

In dynamic equilibrium the rate of the foward reaction is equal to the rate of backward reaction. Also the concentration of the products and reactants stay constant.

MB
Answered by Moin B. Chemistry tutor
11268 Views

How are elements in the modern periodic table arranged?

Elements are arranged in rows, referred to as periods, of increasing atomic number. To recap, atomic number is the number of protons in the nucleus of an atom. Elements are also arranged in columns, refer...

AG
Answered by Alex G. Chemistry tutor
24729 Views

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