Atoms homework *earn lots of points*

Answer A)

1. Ne will have 10 protons and the charge of protons is positive.

2. Ne will have 10 neutrons and there is no charge on the neutrons.

3. Ne has 10 electrons and the electrons have a negative charge.

4. Atomic number of Ne is 10.

5. Atomic mass of Ne is 20.1797 u.

6. Name of the atom is Neon.

Answer B)

1. Hydrogen has no neutrons.

2. Atomic mass of carbon is 12 u.

3. Calcium has 20 protons.

4. Fluorine has 10 neutrons.

5. Potassium has 20 neutrons.

6. Oxygen has 8 protons.

Protons identifies an atom.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.