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Learning Task 2 Directions: Use your Periodic table to complete the worksheet. 1. What is the atomic symbol for silver? 2. What is the atomic mass of mercury? 3. Ni is the symbol for what eleme 4. The element that has the atomic number 17 is? 5. List the symbols for two transition metals. 6. Cu, Ag, and Au are all in what group # 7. Name two noble gases 8. Give the symbol for two halogens. 9. What is the symbol for element with atomic number 74? 10. What is the atomic mass of copper?​

Sagot :

Answer:

1. AG

2.200.59 u

3.Nickel

4.Chlorine

5.The first main transition series begins with either scandium (symbol Sc, atomic number 21) or titanium (symbol Ti, atomic number 22) and ends with zinc (symbol Zn, atomic number 30). The second series includes the elements yttrium (symbol Y, atomic number 39) to cadmium (symbol Cd, atomic number 48).

6.Group 11

7.Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.

8.Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

9.W Tungsten

10.63.546 u

Explanation:

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