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Why are potassium and caesium rather than lithim used in photoelectric cells?
Wiki User
∙ 11y ago
Potassium can loose electron easily . Comparatively Lithium have high ionisation energy and low level of loosing electron while absorbing light energy.
Wiki User
∙ 11y ago
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Why was evaporation used to determine the mass percentage of potassium chloride rather than filtration or recrystallization?
snoopy
Is potassium chloride sublime?
Potassium chloride also known as KCl is a rather ordinary salt, abundantly present in sea water, edible by human beings (in moderate amounts only) and not particularly sublime.
Does sulfur and oxygen form ionic compounds?
The reaction of chlorine and sulfur can give a few different products, each of which is considered to have covalent rather than ionic bonding.
What colourless gas is let off when you burn potassium permanganate?
there is no such thing. Potassium permanganate is a metallic purple crystalline substance that is solid at room temperature and can not be made a gas because it decomposes at 240 C. Long before it would become a gas. It dissolves in water rather well so you could make a water mixture and spray it but that would not be a gas. If you mix Potassium Permanganate with formaldehyde it creates a mild tear gas.
What color flame test does the iodide solution give in flame test?
It is not the anions (e.g. iodide) that are responsible for the flame test color, rather the cations such as sodium ion, potassium ion and calcium ion give you different colors.
Why cesium and potassium used in photoelectric effect?
The ionization enthalpy of K and Cs is less than that of Li and therefore these metals easily lose electrons on exposure to light than lithium.That's the reason potassium and cesium are used in photoelectric cells rather than Cs.
Is there potassium on the earth?
Yes. Potassium is rather abundant on Earth.
Symbol for potassium nitrate?
KNO3. This is usually called a "formula" rather than a "symbol".
Why is serum potassium measured rather than intracellular potassium?
Serum potassium concentration relates both to the internal balance between intracellular and extracellular fluids and the external balance determining the total body potassium. hope this helped please add additional informarion
Why does the element caesium have the symbol Cs rather than Ca?
Ca was already being used for calcium. Also, the second letter of the abbreviation is generally chosen to suggest the name of the element rather than being the literal second letter in the name.
Is KI a salt?
No, KI (potassium iodide) is not a salt. It is a chemical compound that contains the elements potassium and iodine. While it does have an ionic bond, it is more accurately classified as an inorganic compound rather than a salt.
Why was evaporation used to determine the mass percentage of potassium chloride rather than filtration or recrystallization?
snoopy
What is the chemical formula and structure of potassium?
Potassium is an element, it has a symbol which is K, rather than a formula. Like all elements, its structure is spherical. There are protons and neutrons in the center, and electrons in the outer layers.
If you are running a photoelectric effect experiment and you have a current flowing what would increase the flow?
The more intense the light, the greater the generated current will be. The important thing to understand about the photoelectric effect is that turning up the intensity of the light does not result in the electrons delivering more energy. Rather, a larger number of electrons are given the specific amount of energy that corresponds to the color of the light.
Which reaction produces more pure oxygen which is not united with other elements solid potassium permanganate with hydrogen peroxide or solid potassium permanganate with Sulfuric acid with H2O2?
The reaction that produces more pure oxygen which is not united with other elements is solid potassium permanganate with hydrogen peroxide rather than solid potassium permanganate with sulfuric acid with H2O2.
What does the sodium-potassium exchange pump transfer into and out of the cell during depolarization?
The sodium potassium pump does not function during depolarization, but rather after repolarization. During repolarization, potassium ions flow out of the cell into the extracellular space to reestablish membrane polarity. What the sodium potassium exchange pump does is reestablish the initial ionic concentrations. It does this by exchanging three sodium ions inside the cell for every two potassium ions outside the cell.
Is potassium chloride sublime?
Potassium chloride also known as KCl is a rather ordinary salt, abundantly present in sea water, edible by human beings (in moderate amounts only) and not particularly sublime.
