Answer:
a) nucleophilic
b) Acid-base
c) Acid- base
d) nucleophilic
e) Acid-base
Explanation:
A nucleophilic reaction is one in which a nucleophile attacks a substrate and a leaving group departs from the substrate.
Reactions (a) and (d) are nucleophilic reactions since the Br- is the leaving group in the both reactions.
Reactions (b) (c) and (e) are acid-base reactions since they involve salt and water as products.
Energy has been added to the system for the reaction to occur.
Answer:
Because half filled sub levels are more stable than partially filled sub levels
Explanation:
The reason for the exceptional configuration found in some atomic orbitals is due to the special stability of half-filled sub-levels over partially filled ones.
One of the characteristic thing about filling some atomic orbitals we have to bear in mind that there is a stability conferred on an atom by being partially filled.
The energy needed to remove an electron from a half-filled configuration or inert gas configuration is very great.
This is why when there is a choice to have half-filled orbitals, it is desirous to go for this configuration.
Answer : Option B) The period 2 element would be more reactive because the attractive force of protons is stronger when electrons are attracted to a closer electron shell.
Explanation : The reactivity of the Periods decreases as we go from left to right across a period. The farther to the left and down the periodic chart we go, the easier it is for electrons to be donated or taken away, resulting in higher reactivities of the elements. The attractive force of the protons is found to be stronger when electrons are found to be attracted to a closer electron shell.
0.005008 = 5.008 × 10^(-3)
hope it helps!
