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It is the energy required to remove the 1st electron from the atom
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoThe lowest first ionization energy is for caesium: 375,7 kJ/mol.
Wiki User
∙ 7y agoThe ionization energy is the energy necessary to extract an electron from an atom; first refer to the external shell of electrons.
Wiki User
∙ 13y agoFrancium
Wiki User
∙ 12y agoRb
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What elements have the highest and lowest ionization energy?
Helium has the highest first ionization energy and francium has the lowest first ionization energy.
What are the element within any giving periodic table would always have the lowest first ionization energy?
Francium in group 1 has the lowest first ionization energy.
What element in period 3 has the lowest first ionization energy?
Sodium
Do nonmetals have a low first ionization energy?
No. Nonmetals have a high first ionization energy.
Which element has the smallest first ionization energy Na K Rb Li?
Lithium has the least number of protons, rubidium has the most number of protons.
What elements have the highest and lowest ionization energy?
Helium has the highest first ionization energy and francium has the lowest first ionization energy.
What are the element within any giving periodic table would always have the lowest first ionization energy?
Francium in group 1 has the lowest first ionization energy.
What is the relationship between ionization energy and the alkali metals?
There is no relation ship. They have the lowest ionization energies.
What element in period 3 has the lowest first ionization energy?
Sodium
What is ionization energy and which element has the lowest ionization energy?
The energy required for an element to ionize and helium has the lowest.
Rank the following elements in order of increasing first ionization energy C Ne Sr Mg Be?
Ne (Highest First Ionization Energy) C Be Mg Sr (Lowest First Ionization Energy)
What elements has the lowest first ionization energy Phosphorus scandium strontium or oxygen?
strontium
What element in family IA has the lowest ionization energy?
the lowest ionization energy in IA :hydrogen ,lithiun ,sodium and potassium
Which one has the lowest ionization energy magnesium (Mg) chlorine (C?
Chlorine is Cl, C is carbon. The first ionization energy of magnesium is less than that of chlorine.
Which element has the lowest ionization energy halogens metals non metals or noble gases?
Metals have the least ionization energy
Do nonmetals have a low first ionization energy?
No. Nonmetals have a high first ionization energy.
What is first ionization energy?
Sodium's first ionization energy is 495 kJ / mol.
