help with selenium

[ZinkQ]

why it doesnt work?

my code:

from selenium import webdriver
driver = webdriver.Chrome()
driver.get("http://www.google.com")

error:

Error:
Traceback (most recent call last):
  File "C:/Users/MSI/PycharmProjects/fblogin/fb.py", line 2, in <module>
    driver = webdriver.Chrome()
  File "C:\Users\MSI\PycharmProjects\fblogin\venv\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "C:\Users\MSI\PycharmProjects\fblogin\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "C:\Users\MSI\PycharmProjects\fblogin\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "C:\Users\MSI\PycharmProjects\fblogin\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\MSI\PycharmProjects\fblogin\venv\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: cannot find Chrome binary
  (Driver info: chromedriver=2.38.552522 (437e6fbedfa8762dec75e2c5b3ddb86763dc9dcb),platform=Windows NT 10.0.18363 x86_64)