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Why does ionisation result in a decrease in size for potassium but an increase in chlorine?
Wiki User
∙ 16y ago
Ionization of potassium (K) results in a positive ion, K+, which has the electronic configuration of Ar. The ionization of chlorine (Cl) results in a negative ion (Cl-), also with the electronic configuration of Ar. Adding an electron always increases the size of an atom, and removing one always decreases its size.
Note that both K+ and Cl- have the same number of electrons, but Cl- is larger than K+, because they are not as tightly held to the nucleus in Cl- because it has 2 less protons than potassium does. The size of the electron cloud determines the size of the atom and with fewer positively charged protons to pull the same number of electrons in close to the nucleus the electron cloud is larger for Cl-.
Wiki User
∙ 16y ago
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Does the solubility of potassium nitrate in water increase or decrease as the temperature rises?
Increase
Does the pH of the solution increase decrease or stay the same when you add solid potassium chloride to dilute solution of potassium hydroxide?
The pH remain constant.
Why does a buffer solution will change in pH upon addition of acid or base?
Buffering compounds are weakly ionised, addition of hydrogen or hydroxide ions (in modest amounts), shift the degree of ionisation of the buffer which produces an increase or decrease in the hydrogen or hydroxide ions provided by the buffer itself. This change in ionisation of the buffering compound approximately compensates for the addition.
How the hormone epinephrine increases the pumping rate of the sodium-potassium exchange pump in skeletal muscles?
Na would decrease, K would increase
Why does the ionization energy tend to decrease from top to bottom within a group?
there is an increase in atomic number and atomic size down the group due to addition of extra shells.this increase in the atomic size overcomes the effect of an increase in the nuclear charge.Therefore ionisation energy decreases with an increase in atomic size i.e.,it decreases as one moves down a group..
Does the solubility of potassium nitrate in water increase or decrease as the temperature rises?
Increase
Does an increase in ECF K plus level increase heart rate?
Potassium levels DECREASE heart rate, and maybe lead to severe cardiac arrest.and for sure, this is a mechanism of how potassium level in ECF can decrease heart rate:first, the potassium level increase in ECF making its efflux increase, due to activation of potassium channels in pacemaker cells, then the slope of pacemaker action potential will decrease, which means that the duration of one beat is prolonged, and this lead to decrease the numbers of beats in one minute, which by turn means that the heart rate is decreased.
Does an increase or decrease in potassium extracellular ions hyperpolarize a cell?
An extracellular increase of potassium (increase of intracellular Sodium) causes depolarization. The opposite, I presume, meaning high intracellular potassium (inside cell) and high extracellular sodium (outside cell) would be hyperpolarization
Does the pH of the solution increase decrease or stay the same when you add solid potassium chloride to dilute solution of potassium hydroxide?
The pH remain constant.
Why does a buffer solution will change in pH upon addition of acid or base?
Buffering compounds are weakly ionised, addition of hydrogen or hydroxide ions (in modest amounts), shift the degree of ionisation of the buffer which produces an increase or decrease in the hydrogen or hydroxide ions provided by the buffer itself. This change in ionisation of the buffering compound approximately compensates for the addition.
How the hormone epinephrine increases the pumping rate of the sodium-potassium exchange pump in skeletal muscles?
Na would decrease, K would increase
Why does the ionization energy tend to decrease from top to bottom within a group?
there is an increase in atomic number and atomic size down the group due to addition of extra shells.this increase in the atomic size overcomes the effect of an increase in the nuclear charge.Therefore ionisation energy decreases with an increase in atomic size i.e.,it decreases as one moves down a group..
Does heat increase or decrease thermal energy?
increase
Does x increase or decrease making the y increase or decrease?
no. :)
Does increase of inventory increase or decrease cash flow?
When adjusting your cash flow statement, you increase (add) a decrease of inventory and decrease (subtract) an increase of inventory
Do machines increase or decrease work?
they increase productivity but decrease jobs
Do you increase or decrease in mass?
you increase or decrease mass by taking the mass out
