Question

test iii. identify whether each element below is classified as metal, non - metal & metalloid

1. mercury -
2. erbium -
3. sodium -
4. polonium -
5. cerium -
6. bismuth -
7. hydrogen -
8. neon -
9. boron -
10. silicon -

test iv: identify which group each element below is classified. choose your answer from the
below.

1. hydrogen -
2. cesium -
3. radon -
4. iodine -
5. lead -
6. antimony -
7. zinc -
8. radium -
9. uranium -
10. molybdenum -
11. vanadium -
12. holmium -
13. tungsten -
14. germanium -
15. phosphorus -

Explanation:

Based on general knowledge of the periodic - table and element classifications:

• Metals are typically good conductors of heat and electricity, have a metallic luster, and are malleable and ductile.
• Non - metals are generally poor conductors and have different physical properties.
• Metalloids have properties intermediate between metals and non - metals.
• Elements are also classified into groups such as alkali metals, alkaline earth metals, transition metals, halogens, noble gases, etc. based on their position in the periodic table and chemical properties.

Answer:

1. Mercury - Metal
2. Erbium - Metal
3. Sodium - Metal
4. Polonium - Metal
5. Cerium - Metal
6. Bismuth - Metal
7. Hydrogen - Non - metal
8. Neon - Non - metal (Noble Gas)
9. Boron - Metalloid
10. Silicon - Metalloid
11. Hydrogen - Non - metal
12. Cesium - Metal (Alkali Metal)
13. Radon - Non - metal (Noble Gas)
14. Iodine - Non - metal (Halogens)
15. Lead - Metal (Post - Transition Metal)
16. Antimony - Metalloid
17. Zinc - Metal (Transition Metal)
18. Radium - Metal (Alkaline Earth Metal)
19. Uranium - Metal (Actinide Series)
20. Molybdenum - Metal (Transition Metal)
21. Vanadium - Metal (Transition Metal)