Chemistry291

  The world "into" can't be used as a verb.But it can be used as a preposition.

  The world "into" can't be used as a linking verb .But it can be used as a preposition.

  The world "into" can't be used as a noun .But it can be used as a preposition.

  The world "into" can't be used as an adverb.But it can be used as a preposition.

  The world "into" can't be used as a coordinating conjunction.But it can be used as a preposition.

  The world "into" can't be used as a subordinating conjunction.But it can be used as a preposition.

  The word "a" can be used as a determiner.More specifically,a can be used as an article which is the one category of determiners.Besides,the word "a" can be used as a preposition, a noun and a verb. 

  The word "is "can be used as a verb.More specifically,it can be used as a either linking verb or helping verb.But it can't be used as a noun or an adjective.

  The word "is "can be used as a verb.More specifically,it can be used as a either linking verb or helping verb.But it can't be used as a conjunction.

  The word "is "can be used as a verb.More specifically,it can be used as a either linking verb or helping verb.But it can't be used as a conjunction.

  The word "is "can be used as a verb.More specifically,it can be used as  either a linking verb or a helping verb.But it can't be used as an adjective.

  The word "is "can be used as a verb.More specifically,it can be used as  either a linking verb or a helping verb.But it can't be used as an adverb.

  The word "is "can be used as a linking verb.More specifically,it can be used as  either a linking verb or a helping verb.But it can't be used as an adverb,a noun or a preposition.

  The word "is "can be used as a linking verb.More specifically,it can be used as  either a linking verb or a helping verb.But it can't be used as a action verb.

  The word "is "can't be used as a pronoun.But it can be used as  either a linking verb or a helping verb.

  The word "is "can't be used as a preposition.But it can be used as  either a linking verb or a helping verb.

  The word "is "can be used as a  verb.More specifically,it can be used as  either a linking verb or a helping verb.But it can't be used as a action verb.

  No,the word "these" can't be used as a preposition.But it can't be used as a pronoun or an adjective (a determiner).

 8 (Eight) Explanation: A neutral atom of fluorine has seven valence electrons.But for a negative charged fluoride, F-,ion has just one more electron.That is, F- has eight valence electrons.