Question

An element, the atomic number 36 belongs to _______ group and -------- period.

Answer 1

Electronic configuration of the element whose atomic number is 36:

Since this element has 36 atomic numbers, it is having means 36 electrons.

$2,8,18,8$ is the electronic configuration.

According to the Aufbau principle, $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4p^{2}3d^{10}4s^{2}4p^6$.

Identification of group and period through the electronic configuration:

The total number of shells filled in the atom or the value of n in which the last electron enters indicates the period number of that element.

For the group number in the case of p-block elements add 10 to the number of electrons in the outermost shell.

The element with atomic number 36 is krypton and using the above information it can be said that it belongs to the 18^th group and 4^th period of the periodic table.
An element, the atomic number 36 belongs to the 18^th group and 4^th period.