Question

An atom in the ground state contains a total of 5 electrons 5 protons and 5 neutrons. Which Lewis electron-dot diagram represents this atom

Answer 1

The answer it the x with 2 dots on the top, and one dot on the right side. 

Answer 2

Answer : The element will be Boron which has 5 electrons in it, and at the atomic nucleus it consists of 5 neutrons and 5 protons.

The lewis electron dot structure for boron will have three dots on the atom.

Which can be represented as · X :

Where X represents the element and dots represents the electrons present in the outermost valence shell.

Boron distributes its 5 electrons in this way, that first shell has 2 electrons and the second shell has 3 electrons.