The electronic configuration of an atom having atomic number `20' is –

Related MCQs

• An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is–
• Atomic number of an atom gives the number of which of the following?
• An atom of an element with mass number 23 and atomic number 11 will have-
• The umber of neutrons present in an element having mass number 226 and atomic number 88 is–
• Atomic size refers to the               of an atom.
• Number of neutrons in an atom of hydrogen is -
• Atomic mass of Sulphur is 32u. The number of moles in 16 games of Sulphur is:
• The atomic number of hydrogen is 1. This implies that it contains                in its K- shell.
• Which of the following elements has the atomic number greater than that of Phosphorus?
• An element with an atomic number of 17 is -