The group number and period number respectively of an element with atomic number 8 are-

Question

Question

This question was previously asked in

RRB JE CBT I - (Held On: 30 May 2019 Shift 1)

Answer 1

The correct answer is 16, 2

Key Points

The element with atomic number 8 is Oxygen.
Oxygen belongs to Group 16 and is in Period 2 of the periodic table.
The group number indicates the number of valence electrons in the outermost shell, while the period number indicates the number of electron shells.
In the case of oxygen, it has 6 valence electrons (hence Group 16) and 2 electron shells (hence Period 2).

Additional Information

The periodic table is arranged in order of increasing atomic number, which represents the number of protons in an atom's nucleus.
Elements in the same group have similar chemical properties because they have the same number of valence electrons.
Oxygen is a non-metal and is essential for respiration in most living organisms.
The element symbol for oxygen is O.