For how many elements in periodic table outermost electron is present in `'s'` subshell?
`12`
`13`
`14`
`10`

How many elements are there in period 2?

How many electrons are present in sulphur ?

How many orbitals are present in p-subshell?

How many orbitals are present in p-subshell?

How many elements can be there in the third period ?

How many electrons are present in the outermost orbit of helium?

How many groups are there in the modern periodic table?

The most common oxidation state of an element is -2. The number of electrons present in its outermost shell is

How many elements are present in the d-block of the periodic table?

Name or state with reference to the elements of the modern periodic table. The number of electron shells in elements of period 3.