See the subshells present in each shell in the given table. Shell number 1 2 3 4 Subshells s s , p s , p , d s , p , d , f Which subshell is common to all shells.

s subshell is common for all shells as all elements start with s sub-shell. Note: In an atom, a shell is a collection of subshells with the same principal quantum number, n. Subshells are collections of orbitals which share the same principal quantum number and angular momentum quantum number, l , which is denoted by the letters s , p , d , f , g , h and so on.

Complete the given table: Shell number 1 2 3 4 Subshell s s p s p d s p d f Representation of subshells 1s - - - 3p - - - 4d -

The serial number of the shell to the symbol of the sub-shell. For example 1 s to indicate the 's' sub-shell of the first shell and 2s for the s sub-shell of the second shell and 2 p for the p sub-shell of the second shell and so on. Shell number 1 2 3 4 Subshell s s p s p d s p d f Representation of subshells 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f

The atomic number of hydrogen is 1 ( H 1 ) . How many electrons are present?

The number of electrons in an atom is equal to its atomic number. Hydrogen is the first element on the periodic table, with an atomic number of 1. It has just one proton and one electron.

The atomic number of hydrogen is 1 ( H 1 ) . In which shell is the electron filled?

The atomic number of hydrogen is 1. The electronic configuration of the atom is 1 s 1 . The electron is filled in K shell. Each successive shell can only hold a certain number of electrons. The innermost shell is filled first. This shell can contain a maximum of two electrons.

The atomic number of hydrogen is 1 ( H 1 ) . In which sub-shell?

The atomic number of hydrogen is 1. The electronic configuration of the atom is 1 s 1 . The electron enters into S sub-shell. The elements in which the last electron is entering into s- sub-shell are called s-block elements. The s-block elements are present on the left side of the periodic table.