Lewis Dot Symbols (Simplified) Practice Problems

The Lewis dot symbols for M and N are given below. 

Determine the ions formed by M and N.

A representative element forms an ion with the symbol L¹⁻. Draw the Lewis dot symbol of the element.

A representative element forms an ion with the symbol X³⁺. Draw the Lewis dot symbol of the element.

What is the group number and Lewis symbol for tennessine?

What is the group number and Lewis symbol for francium?

Consider the following electron configuration by shell of an unknown element: 2 8 18 18 7. 

(i) This element belongs to which group and period in the periodic table?

(ii) Determine whether the element is a metal or a nonmetal.

(iii) Determine the number of protons in an atom of this element.

(iv) Provide the identity of the element.

(v) Draw the electron-dot symbol of this element.

Based on the condensed electron configurations and Lewis electron-dot symbols, predict the ions formed from the following atoms and determine the formula of their compound.

Ba and O

What element could the following symbol represent?