Question

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Answer 1

Answer:

1) Na - Natrium

Fe- Ferrum

Au - Aurum

2) Molecular mass - The molecular mass is equal to sum of atomic masses of all the atoms present in one molecule of the compound.

Formula mass -The atomic mass of an atom and its ion is just the same ( because the electrons which convert an atom into an ion have negligible mass.

3) CuCl2

4) 7

5) Iron sulphide, Aluminium carbonate

6) 1 amu = 1 atomic mass unit

7) Antoine Lavoisier

8) atomus

9) 6.022x10^23

10) 14;3

11) Cation -Na+

Anion - CH3COO-

12) 108 gram

13) Calcium oxide ( CaO)

14) 0.5 moles

15) Electronic configuration- 1s2, 2s2, 2p4

Valency - 2

I hope this is helpful to you!!!!!

Answer 2

Answer:

refer to the attachment