Mg+alcl3-->mgcl2+al is the
I think the answer is : they are molecules not element
Fluorine has 9 protons and 9 electrons
Iodine has 53 protons and 53 electrons
Characteristics of reliable scientific explanations are present in the development of the atomic theory in the given passage.
<h3>What is atomic theory?</h3>
Atomic theory is the scientific theory that matter is composed of particles called atoms.
The discoveries of subatomic particles such as;
- electron by J.J. Thomson
- proton by Ernest Rutherford
- neutron by James Chadwick
- nucleus by Ernest Rutherford
all contributed in the development of the atomic theory.
From the information given in the passage J.J. Thomson experiment gave rise to atomic model while Rutherford, Geiger and Ernest Marsden, performed the experiment that discovered nucleus and proton.
Thus, characteristics of reliable scientific explanations are present in the development of the atomic theory in the given passage.
Learn more about atomic theory here: brainly.com/question/678145
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