this worked to install selenium and google chrome on my Ubuntu 16 server.

chromeinstall_ubu16.sh

#!/usr/bin/env bash
# used to install offical chrome and selenium on Ubuntu 16.04.1 LTS, 18.04 desktop, Jan 2020
# also tested and works on Elem OS 5.1 :)
cd ~
sudo apt-get update
sudo apt install python-pip
pip install simplejson 
pip install bs4 
pip install selenium
apt-get install libasound2 libnspr4 libnss3 libxss1 xdg-utils unzip
sudo apt-get install -y libappindicator1 fonts-liberation
apt-get -f install
wget http://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo dpkg -i google-chrome*.deb
# chromedriver also needs to be installed.  
CHROME_VERSION=$(curl https://chromedriver.storage.googleapis.com/LATEST_RELEASE)
wget https://chromedriver.storage.googleapis.com/$CHROME_VERSION/chromedriver_linux64.zip
#wget http://chromedriver.storage.googleapis.com/2.45/chromedriver_linux64.zip
unzip chromedriver_linux64.zip
sudo mv chromedriver /usr/bin/chromedriver
sudo chown root:root /usr/bin/chromedriver  # questionable - may need to add other user permissions
sudo chmod +x /usr/bin/chromedriver