0
Imagine that one electron has already been removed from an atom, the energy used to accomplish this is the 1st ionization energy.
Now more energy is needed to remove a 2nd electron. That is the 2nd ionization energy.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoFirst pull out your Periodic Table. If you know their are 18 groups on the periodic table, you know then that their is a specific order on how to find the ionization number of an element. As shown:
Ionization for Group 1 is +1
Ionization for Group 2 is +2
Ionization for Group 3 is +3
Ionization for Group 4 is +4
Ionization for Group 5 is +5
Ionization for Group 6 is +6
Ionization for Group 7 is +7
Ionization for Group 8 is +8
Ionization for Group 9 is +9
Ionization for Group 10 is +10
Ionization for Group 11 is +11
Ionization for Group 12 is +12
Ionization for Group 13 is +3
Ionization for Group 14 is +4 or -4
Ionization for Group 15 is -3
Ionization for Group 16 is -2
Ionization for Group 17 is -1
Ionization for Group 18 is 0
Wiki User
∙ 14y agoIn general, you can pretty much predict that the second ionization energy will always be higher than the first ionization energy regardles of what atom you are looking at. This is because when you remove an electron, there is less electron-electron repulsion in the valence shell, which means that the electron cloud shrinks a bit. When it shrinks, the average distance from the nucleus for the remaining valence electrons decreases, increasing the amount of energy needed to remove them.
This effect is magnified TREMENDOUSLY if you are looking at the group 1 elements (alkali metals), because after ionizing the first electron you remove a shell. This means that the valence shell is now closer to the nucleus and the effective nuclear charge that those valence electrons feel is increased. For instance, as a result, the 2nd ionization energy is very high. In the case of Na+, the 2nd ionization energy is higher than even helium, the atom that has the highest first ionization energy on the periodic table.
Wiki User
∙ 14y agoIonization energy is an atoms ability to hold on to its valence electrons. Flourine (F) has the highest, and Francium (Fr) has the lowest. This value decreases from top to bottom and from right to left.
Wiki User
∙ 11y agoJust see where there is a significant jump in the ionization energies. For example, if the first ionization is 456 and the second is 4996, you know that there is one valence electron. Then you have to check the others, consecutively, for any other valence electrons. Hope this helps!
Wiki User
∙ 13y agoThe energy required to remove an electron from an atom is called the ionization energy.
Wiki User
∙ 9y agoYou can figure out the ionization energies of different elements relative to each other based on where they appear on the periodic table. It increases down a group and from right to left.
Add your answer:
Earn +20 pts
What is the energy needed to remove electrons from an atom called?
ionization potential energy. but remember the atom must be neutral .
What is lowest second ionization energy on argon calcium or potassium?
calcium
What has a second ionization energy level of 1577?
The element that has the highest second ionization energy is Li. When you remove the first electron from Li you are down to the 1s orbital. They are harder to remove because they are closest to the nucleus.
What energy required to remove two valency electrons of a metallic atom?
This is the second ionization energy.
Why does the second ionization energy of Group 1 Elements greater than the first ionization energy of Group 1 Elements?
It takes more energy to knock off two electrons
Which is greater the second ionization energy of potassium or that of calcium?
potassium is greater in the second ionization energy.
What is the energy needed to remove electrons from an atom called?
ionization potential energy. but remember the atom must be neutral .
Which of these elements has the highest first ionization energy Si or C?
The ionization energy is the energy needed to extract an electron from an atom; first ionization energy, second, third etc. can be measured. Reactive chemical elements have lower ionization energy.The first ionization energy for silicon is 786,5 kJ/mol.The first ionization energy for carbon is 1 086,5 kJ/mol.
What do we mean by the first second third ionization energies for a particular atom?
First ionization energy is the energy required to remove the first outermost electron from an atom. The second ionization energy is the energy required to remove the next available electron, and is greater than the first IE. The third IE is that energy needed to remove the third electron, and is greater the the second IE.
Which element in the second period has the greatest ionization energy?
Neon
Which element's second ionization energy level is large compared to its first ionization energy?
Cl
Does calcium have a lower first ionization energy level than sodium?
No. Calcium has TWO valence electrons, and Sodium has ONE. It is lot easier to take off one, than two you see. However, the second ionization energy of calcium IS however than the second ionization energy of Sodium. ;)
Which has the larger sixth ionization energy Se or Br?
The first ionization energy is the energy that is required in order to remove the first electron from an atom in the GAS phase, the second ionization energy is the energy required to remove the second electron from an atom, etc. Ionization energy generally increases for every electron that is removed, and increases from left to right in the periodic table or if moving up the periods. In this case, from the periodic table (or according to Mastering Chemistry) Bromine (Br) has a larger sixth ionization energy than Selenium (Se).
What is lowest second ionization energy on argon calcium or potassium?
calcium
An atom has a first ionization energy of 496 kJmol and a second ionization energy of 4560 kJmol What group of the periodic table would the atom be in?
group 1
What do we mean by the first second and third ionization energies for a particular atom?
First ionization energy is the energy required to remove the first outermost electron from an atom. The second ionization energy is the energy required to remove the next available electron, and is greater than the first IE. The third IE is that energy needed to remove the third electron, and is greater the the second IE.
What has a second ionization energy level of 1577?
The element that has the highest second ionization energy is Li. When you remove the first electron from Li you are down to the 1s orbital. They are harder to remove because they are closest to the nucleus.
