Which of the following statements regarding Grignard reagents are TRUE?
1. Grignard reagents tend to act as Bronsted acids.
2. Grignard reagents decompose rapidly in anhydrous ether solutions.
3. A Grignard reagent contains nucleophilic carbon.
4. Once prepared , a Grignard reagent should be used quickly.
5. The Grignard reagent is an example of an organometallic compound.