Atom Element Blocks, Bohr Models And Element Classes

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6. How many neutrons are in fluorine?

Find the difference between the atomic number and the atomic mass to get the number of neutrons.

19 - 9 = 10

Explanation

Find the difference between the atomic number and the atomic mass to get the number of neutrons.

19 - 9 = 10

Submit

8. How many neutrons are in tin?

Find the difference between the atomic number and the atomic mass to get the number of neutrons.

119 - 50 = 69

Explanation

Find the difference between the atomic number and the atomic mass to get the number of neutrons.

119 - 50 = 69

Submit

11. Which drawing represents a correct Bohr's Model?

A

B

C

Drawing A is not correct as it shows the electrons in the nucleus and the protons in the electron shell.
Drawing B is not correct as it shows the electrons in the nucleus and the neutrons in the electron shell.
Drawing C is correct.

Explanation

Drawing A is not correct as it shows the electrons in the nucleus and the protons in the electron shell.
Drawing B is not correct as it shows the electrons in the nucleus and the neutrons in the electron shell.
Drawing C is correct.

12. Which class of element is sulfer (S)?

Metal

Non-metal

Metalloid

To help answer this question, find the zig-zag line on the periodic table of elements. Look for metals you are familiar with on the table. You should find iron, gold, silver and many others on the left side of the zig-zag line. This is your clue that this is the area that has the metals.

Non-metals are to the right of the zig-zag line. Since sulfer is in this area, it is a non-metal.

Metalloids are found along the zig-zag line.

Explanation

To help answer this question, find the zig-zag line on the periodic table of elements. Look for metals you are familiar with on the table. You should find iron, gold, silver and many others on the left side of the zig-zag line. This is your clue that this is the area that has the metals.

Non-metals are to the right of the zig-zag line. Since sulfer is in this area, it is a non-metal.

Metalloids are found along the zig-zag line.

13. Which class of elements is to the left of the zig-zag line on the periodic table of elements?

Metals

Non-metals

Metalloids

To help answer this question, find the zig-zag line on the periodic table of elements. Look for metals you are familiar with on the table. You should find iron, gold, silver and many others on the left side of the zig-zag line. This is your clue that this is the area that has the metals.

Non-metals are to the right of the zig-zag line.

Metalloids are found along the zig-zag line.

Explanation

To help answer this question, find the zig-zag line on the periodic table of elements. Look for metals you are familiar with on the table. You should find iron, gold, silver and many others on the left side of the zig-zag line. This is your clue that this is the area that has the metals.

Non-metals are to the right of the zig-zag line.

Metalloids are found along the zig-zag line.