Answer:
Explanation:
Electron affinity is the energy released in adding an electron to a neutral atom in the gas phase.
It is a measure of the readiness of an atom to gain an electron. This property is very peculiar to non-metals. The higher the value, the greater the tendency to accept electrons.
Across a period electron affinity increases due to the increasing nuclear charge not being compensated for.
Down a group, electron affinity decreases due to the low nuclear charge and the large atomic radii.
The exception to this rule is the stability of half-filled sublevels. For example, nitrogen has a configuration of 2,5 with sublevel notation of 1s²2s²2p³.
The p-sublevel has a degeneracy of three and the three electrons goes in singly. This makes the configuration stable.
We expect such an atom to have a higher electron affinity but its configuration is stable and carbon would have a higher affinity than it across the same period.
Half filled sublevels are exception to the trend of electron affinity.
Answer:
VITAMINS
Explanation:
vita means "life" and vitamins are life giving compounds
Answer:
if we compare the concentration of both solutions 1.0 M is more concentrated than 0.5
Explanation:
but since NaCl is a product of both strong acid and strong base making NaCl a salt. while aqueous sugar is just a simple solution or mixture.
I think only the second option is wrong.
Answer: D
Explanation:
Because velocity is speed