Answer:
Methyl radical
Explanation:
A radical is any specie that contains an odd number of electrons. We must note that the greater the number of alkyl groups which are attached to a carbon atom that bears the odd electrons, the more the degree of delocalization of the odd electrons and consequently the more stable we expect the free radical to be.
Hence the order of free radical stability is; Methyl < Primary < Secondary < Tertiary. Hence, we can easily see that the methyl radical is the least stable free radical.
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Barium Nitrate = <span>Ba(NO3)2
Sodium Chromate = </span><span>(Na2CrO4)
</span><span>
Answer = BaCrO4+2NaNO3</span>
Answer:
Ammonia is a weak electrolyte, weak base.
Option e.
Explanation:
Ammonia can take a proton from water to make ammonium.
It is a base, because it takes proton.
When a compound can take protons, we know that is base, according to Bronsted Lowry theory.
We can't describe ammonia as a base, according to Arrhenius, but we know it is base according to Lewis, because the N from the ammonia can be a donor of its electron pair.
It is weak because an small amount of ammonia, can react to produce ammonium, between the protons of water. This is the equilibrium, where the ammonia is considered as the conjugate strong acid of ammonia.
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻ Kb
All the amines are considered as weak bases, because they look like ammonia, where the H of NH₃ are replaced by others chains.
------NH₂
-----NH-----
Answer: The arrangement of electrons in atoms is responsible for the shape of the periodic table.
Explanation: Electron configurations can be predicted by the position of an atom on the periodic table.
O_O O_O O_O
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