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What is the electron energy level arrangement for potassium atomic number 19?
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∙ 14y ago
Potassium: - Electronic configuration: [Ar]4s1 - Electrons per shell: 2,8,8,1
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∙ 14y ago
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Why does lithium have a smaller atomic radius then potassium?
because the second ionisation means removing the second electron from the potassium atom. Potassium only has one electrin in its outer most shell so the second electron would be in another electron shell which is closer to the nucleus meaning there is a stronger attraction to that electron because of the protons in the nucleus which are positive and attrct the negative electrons so more energy is needed to remove the second electron
Will Lithium Sodium or Potassium react the fastest?
As it has more electron shells between the nucleus and the outermost electron, and as group 1 elements react by losing there outermost electron, the more shielding effect between the nucleus and the electron, the smaller the force of attraction on the electron, so the more readily it will react as less energy is needed to break the bond between the outer electron and the positive nucleus.
What is the element with a valence electron configuration of 2s2 2p4?
Bromine has 7 electrons in its fourth energy level.
Which has the smallest radius K Rb K Rb?
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
Lithium and potassium which is more reactive?
They both have 1 electron in their outer shell but because potassium has more shells, this electron is further from the nucleus. This means the outermost electron is less stronly pulled by the nucleus so it will break away easier therefore making potassium more reactive.
What is the arrangement of electrons within the electron cloud of an atom?
Energy Levels
Why does lithium have a smaller atomic radius then potassium?
because the second ionisation means removing the second electron from the potassium atom. Potassium only has one electrin in its outer most shell so the second electron would be in another electron shell which is closer to the nucleus meaning there is a stronger attraction to that electron because of the protons in the nucleus which are positive and attrct the negative electrons so more energy is needed to remove the second electron
Will Lithium Sodium or Potassium react the fastest?
As it has more electron shells between the nucleus and the outermost electron, and as group 1 elements react by losing there outermost electron, the more shielding effect between the nucleus and the electron, the smaller the force of attraction on the electron, so the more readily it will react as less energy is needed to break the bond between the outer electron and the positive nucleus.
What is the element with a valence electron configuration of 2s2 2p4?
Bromine has 7 electrons in its fourth energy level.
Element used in photoelectric cells and in atomic clocks?
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How many energy levels are in potassium?
Potassium has four(4) energy levels.
Which has the smallest radius K Rb K Rb?
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
Lithium and potassium which is more reactive?
They both have 1 electron in their outer shell but because potassium has more shells, this electron is further from the nucleus. This means the outermost electron is less stronly pulled by the nucleus so it will break away easier therefore making potassium more reactive.
Which subatomic particle contains the energy stored in the chemical bonds?
Electron. ---------------------------------------------------------------------- The electron itself does not store energy. It is the position of the electron in relation to atomic nuclei that contains the chemical bond energy.
Why are potassium and caesium rather than lithim used in photoelectric cells?
Potassium can loose electron easily . Comparatively Lithium have high ionisation energy and low level of loosing electron while absorbing light energy.
Which atom has the greater atomic radius Potassium or Krypton?
The potassium atom has a larger radius. When potassium loses an electron to become a cation (positively charged ion), it also loses the energy level in which the electron was. Therefore the potassium ion is smaller that the potassium atom.
Why sodium is more reactive than potassium?
The atomic radius of potassium is greater than that of sodium. Therefore, the single valence electron that exists for all alkali metals is located farther from the nucleus for potassium than sodium. This results in less energy required to remove that valence electron from potassium than from sodium, leading to increased reactivity. Note that this trend continues as you move down Group I on the Periodic Table, meaning that Rubidium is more reactive than Potassium and Cesium is more reactive than Rubidium.
