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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
Wiki User
∙ 16y ago
Wiki User
∙ 15y agoBecause the outermost electrons of a potassium atom are farther from its nucleus than the outermost electrons of a lithium atom are from their nucleus. So, the outermost electrons of a lithium atom are held more tightly to its nucleus As a result, removing an electron from a potassium atom takes less energy than removing one from a lithium atom.
Wiki User
∙ 14y agoB. Li has 2 energy levels but potassium has 5 ones
Wiki User
∙ 13y agobecause potassium only has one valence electron to loose, but it is more common for it to share its electron
Wiki User
∙ 7y agoThe number of electron shells is lower.
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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.
Which is bigger the atomic radius of potassium or atomic radius of iodine?
Atomic radius of Iodine is very large compared to potassium.
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.
What is the atomic radius of lithium in angstroms?
2.05
Which atom has the larger atomic radius K or Li?
K (potassium) has the larger atomic radius.
What element in the secound period has the largest atomic radius carbon lithium potassium or neon?
Lithium.
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.
What atom has the largest atomic radius calcium iodine potassium or cesium?
Potassium. It has two extra shells than lithium.
What has the smallest atomic radius out of hydrogen sodium and lithium?
Hydrogen has the smallest atomic radius - 25 pm.
Which is bigger the atomic radius of potassium or atomic radius of iodine?
Atomic radius of Iodine is very large compared to potassium.
Which atom is the smallest among lithium and fluorine?
Fluorine because it has a smaller atomic radius.
The atomic radius of potassium is smaller than the atomic radius of?
Rubidium; the next higher atomic numbered element in the same column of the periodic table always has a higher atomic radius, with some exceptions among transition elements due to the "lanthanide contraction". However, potassium and rubidium are not transition elements.
Why does nitrogen have a smaller atomic radius than lithium?
Lithium is altogether a bigger element than hydrogen. Hydrogen is the smallest element, and lithium is listed later on the periodic table, so lithium's radius is just plain bigger than hydrogen.
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.
What is the atomic radius of lithium in angstroms?
2.05
What is the radius of k?
The atomic radius of potassium is 220pm.
Which of these elements has the largest atomic radius. Aluminum potassium fluorine. Calcium?
Potassium has the largest atomic radius. It is in the 1st group of the periodic table. Fluorine has the least atomic radius.
