hydrogen
For the group 1 and 2 elements, the group number is the number of valence electrons. For groups 13 - 18, subtract 10 from the group number to get the number of valence electrons.
The elements in Groups 1 and 2 are in the s block. The elements in Groups 13-18 are in the p block.
Sodium is a representative element belonging to group 1 (s block element)
Electron configuration is the arrangement of electrons in an atom. There are four blocks in the periodic table: S, P, D, F. Block S is groups 1 and 2. Block P is groups 13-18. Block D is groups 3-12. And block F is the lanthanides and actinides. There are several exceptions, for example He is considered part of S block even though it is over group 18. Here are some examples: He - 1S2 Al - 1S22S22P1 Ni - 1S22S22P63S23P64D8 Shorthand form uses the noble gases (group 18). Whatever element you are using, go to the closest noble gas. For example: Ca - [Ar] 4S2
The s-block contains group 1-2.
S-BLOCK IS FROM GROUP # 1-2 P-BLOCK IS FROM GORUP # 13-18 S-BLOCK IS FROM GROUP # 1-2 and P-BLOCK IS FROM GORUP # 13-18
hydrogen
For the group 1 and 2 elements, the group number is the number of valence electrons. For groups 13 - 18, subtract 10 from the group number to get the number of valence electrons.
The elements in Groups 1 and 2 are in the s block. The elements in Groups 13-18 are in the p block.
On the periodic table group 4A is carbon, silicon, germanium, tin and lead. (aka "The Carbon Group")
Helium is not part of the s block because it is a noble gas. Chemically, it is more appropriate to have it in Group 8A or 18.
s-block
Sodium is a representative element belonging to group 1 (s block element)
Sulfur (S) is a p-block element.
Electron configuration is the arrangement of electrons in an atom. There are four blocks in the periodic table: S, P, D, F. Block S is groups 1 and 2. Block P is groups 13-18. Block D is groups 3-12. And block F is the lanthanides and actinides. There are several exceptions, for example He is considered part of S block even though it is over group 18. Here are some examples: He - 1S2 Al - 1S22S22P1 Ni - 1S22S22P63S23P64D8 Shorthand form uses the noble gases (group 18). Whatever element you are using, go to the closest noble gas. For example: Ca - [Ar] 4S2
The elements are classified in 'blocks' according the sub-energy level that the elements have their electrons with highest energy. The block of an element can be determined by its electron configuration.Na - [Ne] 3s1 is an 's-block' element.Cl - [Ne] 3s2 3p5 is a 'p-block' element.Cr - [Ar] 4s1 3d5 is a 'd-block' element as 3d bears higher energy than 4s.The block of an element is determined by the electron configuration. The s block is in the 1st and 2nd groups of the periodic table. The elements in the groups 13,14,15,16,17,18 belongs to the p group.