Challenge #5

T. Trimpe 2008 http://sciencespot.net/

Use a periodic table to help you identify each element. Give its symbol for the answer.

1. I am a member of the Boron family with 49 protons.

2. I have a total of 74 electrons in an atom.

3. I have an atomic mass of 55.847.

4. I have 8 neutrons in an atom.

5. I have 14 protons, 14 neutrons, and 14 electrons in an atom.

6. I have 99 protons and 99 electrons in an atom.

7. I am a member of the Halide family with 18 neutrons.

8. I have 20 neutrons, but only 2 valence electrons.

The answers are …

1. I am a member of the Boron family with 49 protons.

2. I have a total of 74 electrons in an atom.

3. I have an atomic mass of 55.847.

4. I have 8 neutrons in an atom.

5. I have 14 protons, 14 neutrons, and 14 electrons in an atom.

6. I have 99 protons and 99 electrons in an atom.

7. I am a member of the Halide family with 18 neutrons.

8. I have 20 neutrons, but only 2 valence electrons.

In

W

Fe

O Si

Es

Cl

Ca