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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?
Cesium and potassium are used in the photoelectric effect because they have low work functions, meaning they require less energy to remove electrons from their surface when exposed to light. This makes them ideal for generating photoelectrons efficiently when light of certain frequencies or wavelengths is incident on their surface.
Is there potassium on the earth?
Yes. Potassium is rather abundant on Earth.
Why does the element caesium have the symbol Cs rather than Ca?
The element caesium has the symbol Cs to avoid confusion with the element calcium, which already uses the symbol Ca. The symbols are derived from the Latin names of the elements (caesium from "caesius" and calcium from "calx"), and Cs was chosen to distinguish between the two elements.
Symbol for potassium nitrate?
KNO3. This is usually called a "formula" rather than a "symbol".
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.
Is potassium and sulfur an ionic compound?
No, potassium and sulfur do not form an ionic compound because both elements have a tendency to lose electrons (potassium) or gain electrons (sulfur) rather than transfer them to form an ionic bond.
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.
Why is serum potassium measured rather than intracellular potassium?
Serum potassium is measured because it provides a quick and easily accessible indication of the body's potassium levels. Intracellular potassium levels are more difficult to measure directly and require special techniques that are not routinely used in clinical practice. Serum potassium levels can still give valuable information about overall potassium balance in the body.
Is KF covalent?
Yes, potassium fluoride (KF) is a covalent compound. Potassium is a metal and fluoride is a nonmetal, so they bond covalently by sharing electrons to form a stable molecule.
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.
