1s2 2s2 2p6 3s2 3p3
Sodium
Yes, it has 5 energy levels as it belongs to group 5. The 54 electrons in xenon are filled in these energy levels as 2, 8, 18, 18, 8
the energy levels are as follows: first shell 2 second shell 8 third shell 5
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
that depends on the number of electrons the more electrons the more energy
Phosphorus, I think. Please see the link.
What is the neutral atom that has its first two energy levels filled, has 5 electrons in its third energy level, and has no other electrons? Enter the name of the element, not the abbreviation.
Sodium
Phosphorus atoms have five valence electrons. You can know this because P is in group 15/VA. The number of valence electrons is the same as the VA group number (5), or group number 15 minus 10, which is 5.
The innermost energy level always contains two electrons and the rest are arranged in 8s. for example the energy levels of calcium- 2,8,8,2. calcium contains 20 electrons. once the energy levels are filled upto 8 electrons then we move from onto the next energy level. hope this makes sense lol :)
Neon has the 1s2, 2s2, and 2p6 levels filled.
Yes, it has 5 energy levels as it belongs to group 5. The 54 electrons in xenon are filled in these energy levels as 2, 8, 18, 18, 8
the energy levels are as follows: first shell 2 second shell 8 third shell 5
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
You appear to mean silicon. Please see the link.
Electrons are located in energy levels within the electron cloud.
What has three energy levels and six valence electrons