Use Lewis Symbols to show the reaction of atoms to form arsine, AsH3. Indicate bonding pairs in the Lewis formula of AsH3 are bonding and which are lone pairs.

nevermind i got it

Lewis structures just can't be drawn on these boards. I may be able to do it for AsH3. If this doesn't I'll try again.

&nbsp&nbspH
&nbsp&nbsp..
:As:H
&nbsp&nbsp..
&nbsp&nbspH

That should be good enough for you to see how it's done.

To determine the Lewis structure of arsine (AsH3), we need to follow a few steps:

Step 1: Count the total number of valence electrons.
In the case of AsH3:
- Arsenic (As) belongs to Group 15, so it has 5 valence electrons.
- Hydrogen (H) belongs to Group 1, so each hydrogen atom has 1 valence electron.
Since there are three hydrogen atoms in AsH3, the total number of valence electrons is 5 + 1x3 = 8.

Step 2: Determine the central atom.
In arsine (AsH3), the central atom is arsenic (As) because it is less electronegative than hydrogen.

Step 3: Place the electrons around the atoms to form bonds.
Start by connecting each hydrogen atom to the central arsenic atom with a single bond. This accounts for 3x2 electrons since each bond involves 2 electrons. We now have 8 - 6 = 2 electrons left.

Step 4: Distribute the remaining electrons as lone pairs.
The remaining two electrons are placed on the central arsenic atom as lone pairs. This completes the Lewis structure of AsH3.

Lewis structure:
H
|
H-As-H
|
H

In this structure, the bonding pairs are the lines between the atoms (H-As and As-H), while the lone pairs are represented by the two unbonded electron pairs on the central atom (As).