The second ionization energy of oxygen is greater than fluorine because in oxygen, after the first electron is removed, the remaining electron is from a filled shell (2p^4). This electron in oxygen experiences greater electron-electron repulsion, making it harder to remove compared to the outer electron in fluorine which is in a half-filled shell (2p^5).
The electron configuration for an atom of fluorine is [He]2s2.2p5.
The elements in the second period are lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.
The highest energy shell of Fluorine is 2nd shell which contains 7 electrons just like other halogens.
There is no third energy level of oxygen, there is only two. The second energy level has 6 electrons.
The second ionization energy for lithium is greater than the first because removing the second electron requires breaking a stronger bond due to the higher effective nuclear charge after the first electron is removed. This leads to a greater energy input to remove the second electron compared to the first.
Fluorine has the highest electronegativity among the three elements. Oxygen is the second most electronegative, while chlorine has a slightly lower electronegativity compared to both fluorine and oxygen.
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The second energy level of an atom of fluorine will have 7 electrons. This is because the first energy level can hold a maximum of 2 electrons, and the second energy level can hold a maximum of 8 electrons. Since fluorine has a total of 9 electrons, 2 of them will be in the first energy level and 7 will be in the second energy level.
Because with the 2nd ionisation of K, you are trying to take an electron from a fully filled orbital (octet rule) whereas with calcium it is getting down to a fully filled orbital
The electron configuration for an atom of fluorine is [He]2s2.2p5.
Second ionization energy of fluorine is the amount of energy needed to remove an electron from a unipositive fluorine atom (F+)to form F2+,in all the gaseous state
The elements in the second period are lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon.
Fluorine has 9 electrons. The first energy level holds 2 electrons, and the second energy level holds 7 electrons. The Bohr model for fluorine would show 2 electrons in the first energy level and 7 electrons in the second energy level.
The highest energy shell of Fluorine is 2nd shell which contains 7 electrons just like other halogens.
There is no third energy level of oxygen, there is only two. The second energy level has 6 electrons.
The second ionization energy for lithium is greater than the first because removing the second electron requires breaking a stronger bond due to the higher effective nuclear charge after the first electron is removed. This leads to a greater energy input to remove the second electron compared to the first.
More energy have the electrons in the second level of energy.