Correct spelling, explanation: article is a word with many meanings, but the base word can be traced back to Latin articulus, which means a small connecting part. It changed quite a lot over time, but based on the pronunciation and the rules of English word-formation and spelling standards, the final form is constructed in a similar manner to bicycle, vehicle, and so on.

Definition of article:
noun
1. a separated part of a text often numbered
The contract specifies the rights of the user in section 1 article 2 thereof.
2. a set of grammatical words used to define other parts of speech.
Many English learners have a problem with English articles: a, an, and the, and where to use them.
3. a piece of writing, often journalistic or scientific
The phenomenon of the northern lights has been described in many scientific articles.
4. an item of a given type
In a situation of crisis, it is important to help others by supplying them with food, sanitary products, or necessary articles of clothing.

Incorrect spelling, explanation: the base of this word is the Latin word articulus, and like many other words of Latin origin, it underwent some changes to fit English spelling and pronunciation. And, pronunciation-wise, artical could be a viable choice, but based on the English grammar, this word seems like it’s an adjective, such as medical or radical, which is why article is the proper spelling of this word.

Incorrect spelling

Incorrect spelling

Incorrect spelling