Go to element builder gizmo on explorlearning. com solve all on #5 i just need the ones circled. i don't need #2

Explanation:

Bellow are the structures of the elements circled usind the element builder gizmo.

To know for further activities, when asked to draw the electron dot diagram the nucleous of the atom is represented by its chemical symbol and the electrons are represented by dots.

The number of electrons:

For example: O-2 (oxygen anion)

n+h→nh3

we must remember that nitrogen and hydrogen are both diatomic molecules in their standard gas form. this adjusts the equation to

n2+h2→nh3

now we need to adjust coefficients in order to balance the atoms on each side of the equation. currently we have 2 atoms of nitrogen and 2 atoms of hydrogen on the reactant side and 1 atom of nitrogen and 3 atoms of hydrogen on the product side.

we can balance the hydrogens by placing a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen.

n2+3h2→2nh3

this gives us 6 hydrogen on each side and coincidentally the nitrogens now equal 2 on each side.