Answer:
Electromagnet creates electricity.
Explanation:
Group 7a would have an ion charge of -1 because it has 7 valence electrons and it wants to gain one more electron(which is negative) to have a full shell of 8
D: they have new dna combinations
The more acidic the substance is, the more the iron nails will corrode (this obviously depends on what your experiment is but hope this helped in some way)
Answer: 2. they are 4 and 8
Explanation: I took the exam. I hope I helped :)
