Respuesta :
Answer:
2 8 5
2 8
2 8, 6
2 8 2
2 8 3
2 7
Explanation:
This is your question :
Write the electron arrangement for each of the following atoms:(Example sodium is 2,8,1)
a. phosphorus
b. neon
c. sulfur
d. magnesium
e. aluminum
f. fluorine
Phosphorus is an element in period 3. phosphorus has an atomic number of 15 and it contains 15 electrons. The electron arrangement can be computed as follow ;
2 8 5
This means is has 2 electrons at the first energy level, 8 electron at the second energy level and 5 electron at the third energy level. Base on it configuration phosphorus requires 3 electrons to fulfill it octet rule .
Neon is grouped as a noble gas or inert gas because of it less reactive nature . The atomic number of Neon is 10. The electron arrangement can be computed as follows;
2 8
This means it has 2 electrons on the first energy level and 8 electrons on the second energy level. Neon is in period 2 on the periodic table. Neon electron configuration shows it has fulfilled it octet rule, this is why it rarely goes into a reaction with other elements.
Sulfur
Sulfur has an atomic number of 16 . The electronic configuration is as follows ;
2 8, 6
Sulfur is in period 3 base on it configuration . it possess three energy level with 2 electrons at the first energy level , 8 electrons at the second energy level and 6 at the third energy level.
Magnesium
Magnesium has an atomic number of 12 . Magnesium is in period 3 in the periodic table and are also known as the alkali earth metals. The electronic configuration is as follows ;
2 8 2
The three energy level has 2 electrons, 8 electrons and finally 2 electrons. Magnesium is reactive.
Aluminium
Aluminium has an atomic number of 13 . Aluminium is in period 3 . The electronic configuration is as follows;
2 8 3
The three energy level has 2 electrons, 8 electrons and 3 electrons each .
Florine
Florine has an atomic number of 9. Florine is in period 2 on the periodic table. The electronic configurations is as follows ;
2 7
The two energy level has 2 electrons and 6 electrons respectively .
