The five successive ionization energies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol-1 respectively. The number of valence electrons is:
A. 5
B. 3
C. 2
Answers
Answered by
17
Answer:
B. 3
Explanation:
The first three ionisation energies are relatively low compared to the fourth and fifth ionisation energies.
Which means that, after the removing of 3 electrons from the element, a large amount of energy is required to remove the 4th electron.
So we can conclude that the element attains noble gas configuration after removing 3 electrons.
So, valence of the element is 3.
Answered by
2
Answer:
3 because it is mg magnesium
Explanation:
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