Periodic Table worksheet for students to practice identifying elements, their properties, and classifications.

Let's solve each question step by step based on the periodic table.

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1) List the symbols of the elements in Period 2.

Period 2 consists of the second row of the periodic table. The elements are:

- Lithium (Li)
- Beryllium (Be)
- Boron (B)
- Carbon (C)
- Nitrogen (N)
- Oxygen (O)
- Fluorine (F)
- Neon (Ne)

Answer:
Li, Be, B, C, N, O, F, Ne

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2) List the atomic numbers of the elements in Period 2.

Atomic numbers increase from left to right in a period.

- Li: 3
- Be: 4
- B: 5
- C: 6
- N: 7
- O: 8
- F: 9
- Ne: 10

Answer:
3, 4, 5, 6, 7, 8, 9, 10

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3) Name the elements in Period 2 that are metals.

Metals are typically found on the left side of the periodic table. In Period 2:

- Lithium (Li) – metal
- Beryllium (Be) – metal

Boron is a metalloid; the rest are nonmetals.

Answer:
Lithium, Beryllium

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4) Name the elements in Period 2 that are nonmetals.

Nonmetals are on the right side of the periodic table.

In Period 2:
- Boron (B) – metalloid (not a full nonmetal)
- Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon (Ne) – all nonmetals

Note: Boron is often classified as a metalloid, not a true nonmetal.

So, the nonmetals are:

Carbon, Nitrogen, Oxygen, Fluorine, Neon

Answer:
Carbon, Nitrogen, Oxygen, Fluorine, Neon

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5) Which elements are located in the following groups and periods?

We’ll find the element at each specified group and period.

| Group | Period | Element |
|-------|--------|---------|
| a) 4 | 5 | Tin (Sn) |
| b) 2 | 2 | Beryllium (Be) |
| c) 6 | 6 | Polonium (Po) |
| d) 18 | 1 | Helium (He) |
| e) 14 | 5 | Tin (Sn) |
| f) 12 | 4 | Zinc (Zn) |
| g) 1 | 7 | Francium (Fr) |
| h) 16 | 6 | Tellurium (Te) |
| i) 17 | 3 | Chlorine (Cl) |
| j) 11 | 5 | Silver (Ag) |

Answers:
a) Tin
b) Beryllium
c) Polonium
d) Helium
e) Tin
f) Zinc
g) Francium
h) Tellurium
i) Chlorine
j) Silver

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6) For each of the following, label it as metal, nonmetal, or metalloid.

Let’s analyze each property:

a) Poor conductor of electricity → Nonmetal (metals conduct well)
b) Usually a solid at room temperature → Metal (most metals are solids; some nonmetals like sulfur are too, but this is more typical of metals)
c) Ductile → Metal (ductility = ability to be drawn into wires)
d) Usually a gas at room temperature → Nonmetal (e.g., O₂, N₂, F₂)
e) Good conductor of heat → Metal
f) Brittle → Nonmetal (metals are malleable; nonmetals tend to be brittle)
g) Chlorine → Nonmetal (it’s a halogen, diatomic gas)
h) Semiconductor → Metalloid (e.g., silicon, germanium)

Answers:
a) Nonmetal
b) Metal
c) Metal
d) Nonmetal
e) Metal
f) Nonmetal
g) Nonmetal
h) Metalloid

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✔ Final Answers Summary:

1) Li, Be, B, C, N, O, F, Ne
2) 3, 4, 5, 6, 7, 8, 9, 10
3) Lithium, Beryllium
4) Carbon, Nitrogen, Oxygen, Fluorine, Neon
5)
a) Tin
b) Beryllium
c) Polonium
d) Helium
e) Tin
f) Zinc
g) Francium
h) Tellurium
i) Chlorine
j) Silver
6)
a) Nonmetal
b) Metal
c) Metal
d) Nonmetal
e) Metal
f) Nonmetal
g) Nonmetal
h) Metalloid

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