halogens
The elements with the electron configurations that end in ns 2 and np 5 are halogens, group VII A elements.
The elements with the electron configurations that end in ns 2 and np 5 are halogens, group VII A elements.
what column of the periodic table contains elements whose electron configurations end with d4
group 13 or IIIA
Chapter six review? lol same here answer is Ne and Ar are found in group 8A, and there electron configuration both end with a full p orbital Ne(2p6) Ar(3p6)
The elements with the electron configurations that end in ns 2 and np 5 are halogens, group VII A elements.
The elements with the electron configurations that end in ns 2 and np 5 are halogens, group VII A elements.
what column of the periodic table contains elements whose electron configurations end with d4
group 13 or IIIA
All elements in group 1 have 1 valence electron.
Chapter six review? lol same here answer is Ne and Ar are found in group 8A, and there electron configuration both end with a full p orbital Ne(2p6) Ar(3p6)
halogens
The alkaline earth elements electron structure end in s2
The atomic number for sulfur is 16. That means that its electron configuration is 1s2 2s2 2p6 3s2 3p4. This can be shortened to [Ne] 3s2 3p4, which shows you that 3s2 3p4 is how sulfur's electron configuration ends.
The elements in groups 1A and 2A have valence electrons in s-orbitals, while the elements in groups 3A-8A have valence electrons in p-orbitals.
Because the periodic table goes by atomic number, and they all happen to line up at the end of the table. In more detail, the chemical properties and electron configurations of the elements determine the arrangement. The noble gasses all have a full valence shell, so they are placed at the end of the table to indicate.
F = #9, 9 electrons 1s2, 2s2, 2p5 Cl = #17 , 17 electrons 1s2, 2s2, 2p6, 3s2, 3p5 Notice both end in s2, p5. That is why they have similar properties. Both only need 1 electron to complete the octet ( s2 p6 in the outer shell, very stable)