Chemistry291

   How many valence electrons does 1s2 2s2 2p6 3s2 3p3 have? Answer: To find out valence electrons from  1s2 2s2 2p6 3s2 3p3,we will do the following steps:                    Step-1: We need to identify valence shell by the principal quantum number (n)of highest value. From 1s2 2s2 2p6  3s2 3p3 ,the highest value of n is 3. So, third shell is the valence shell and the electrons in 3rd shell is called valence electrons.                       Step-2: Now we need to add all the valence electrons. In 3rd shell,we are getting  3s2 3p3 . If I add all the valence electrons,we get 2 + 3 = 5 valence electrons in  1s2 2s2 2p6  3s2 3p3. From  1s2 2s2 2p6  3s2 3p3, we get totally 15 electrons.Among these 15 electrons, only 5 electrons are called valence electrons that are situated in the outermost shell ( 3s2 3p3). 1s2 2s2 2p6  3s2 3p3 is the el...

   What is 1s2 2s2 2p3 ? Answer: 1s2 2s2 2p3 means that ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons, ●p subshell of second orbit or energy level has three electrons, From 1s2 2s2 2p3 electron configuration,we get 2+2+3 = 7 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p3 indicates the element whose atomic number is 7. Now if you look at the periodic table, nitrogen  has atomic number 8. So 1s2 2s2 2p3 is the electron configuration of nitrogen  (N) . Next

  What is 1s2 2s2 2p4 ? 1s2 2s2 2p4 means that ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons, ●p subshell of second orbit or energy level has four electrons, From 1s2 2s2 2p4 electron configuration,we get 2+2+4 = 8 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p4 indicates the element whose atomic number is 8. Now if you look at the periodic table, Oxygen  has atomic number 8. So 1s2 2s2 2p4 is the electron configuration of Oxygen (O) . Next

What is 1s2 2s2 2p5 ? Answer : 1s2 2s2 2p5 means that ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons, ●p subshell of second orbit or energy level has five electrons, From 1s2 2s2 2p5 electron configuration,we get 2+2+5 = 9 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p5 indicates the element whose atomic number is 9. Now if you look at the periodic table,F (Fluorine) has atomic number 9. So 1s2 2s2 2p5 is the electron configuration of  F (Fluorine) . Next

      What is 1s2 2s2 2p6 3s1  ? 1s2 2s2 2p6 3s1   means that  ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons,   ●p subshell of second orbit or energy level has six electrons, ●s subshell of third orbit or energy level has one electron. From  1s2 2s2 2p6 3s1  electron configuration,we get 2+2+6+1  = 11 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s1  indicates the element whose atomic number is 11. Now if you look at the periodic table,Mg  (Sodium) has atomic number 11. So 1s2 2s2 2p6 3s1  is the electron configuration of Na  (Sodium) .   Next

  What is 1s2 2s2 2p6 3s2 ? Answer: 1s2 2s2 2p6 3s2   means that  ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons,   ●p subshell of second orbit or energy level has six electrons, ●s subshell of third orbit or energy level has two electrons. Read:CO2 Lewis Structure From  1s2 2s2 2p6 3s2  electron configuration,we get 2+2+6+2  = 12 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s2  indicates the element whose atomic number is 12. Now if you look at the periodic table,Mg  (Magnesium) has atomic number 12. So 1s2 2s2 2p6 3s2  is the electron configuration of Mg  (Magnesium) .   Next Next

   What is 1s2 2s2 2p6 3s2 3p2 ? Answer: 1s2 2s2 2p6 3s2 3p2  means that  ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons,   ●p subshell of second orbit or energy level has six electrons, ●s subshell of third orbit or energy level has two electrons,  ● and p subshell of third orbit or energy level has two electrons. From  1s2 2s2 2p6 3s2 3p2 electron configuration,we get 2+2+6+2 + 2 = 14 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom. Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s2 3p2 indicates the element whose atomic number is 14. Now if you look at the periodic table,Si (Silicon) has atomic number 14. So 1s2 2s2 2p6 3s2 3p2 is the electron configuration of Silicon (Si).   Next

  What is 1s2 2s2 2p6 3s2 3p5 ? Answer: 1s2 2s2 2p6 3s2 3p5 means that  ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons,   ●p subshell of second orbit or energy level has six electrons, ●s subshell of third orbit or energy level has two electrons,  ● and p subshell of third orbit or energy level has five electrons. Read:CO2 Lewis Structure From 1s2 2s2 2p6 3s2 3p5 electron configuration,we get 2+2+6+2 + 5 = 17 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom.Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s2 3p5 indicates the element whose atomic number is 17. Now if you look at the periodic table,Cl has atomic number 17. So 1s2 2s2 2p6 3s2 3p5 is electron configuration of Chlorine(Cl). Read:CO2 Lewis Structure   Next Read:CO2 Lewis Structure Some Questions ans Answer: An atom has the electron configur...

What is 1s2 2s2 2p6 3s2 3p6 ? Answer: 1s2 2s2 2p6 3s2 3p6 means that  ●s subshell of first orbit or energy level has two electrons, ●s subshell of second orbit or energy level has two electrons,   ●p subshell of second orbit or energy level has six electrons, ●s subshell of third orbit or energy level has two electrons,  ● and p subshell of third orbit or energy level has six electrons. From 1s2 2s2 2p6 3s2 3p6 electron configuration,we get 2+2+6+2 + 6 = 18 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom.Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s2 3p6 indicates the element whose atomic number is 18. Now if you look at the periodic table,Ar has atomic number 18.So 1s2 2s2 2p6 3s2 3p6 is electron configuration of Argon(Ar).   Next

What is 1s2 2s2 2p6 ? Answer: 1s2 2s2 2p6 means that  ◆s subshell of first orbit or energy level has two electrons, ◆s subshell of second orbit or energy level has two electrons,  ●and p subshell of second orbit or energy level has six electrons. Read:CO2 Lewis Structure From 1s2 2s2 2p6 electron configuration,we get 2+2+6 = 10 electrons. We know that electron's number is equal to proton number or atomic number for neutral atom.Since here there is no words about charge,we can say that 1s2 2s2 2p6 indicates the element whose atomic number is 10. Now if you look at the periodic table,Ne has atomic number 10.So 1s2 2s2 2p6 is electron configuration of Neon(Ne).   Next Question and Answers •What element is best represented by the electron configuration 1s2 2s2 2p6? Answer: The element Neon,Ne, is the best represented by the electron configuration 1s2 2s2 2p6. • How many electrons does 1s2 2s2 2p6 have? Answer: 1s2 2s2 2p6 has ten electrons.