I am struggling with those 20 chemistry questions >

2008-04-07 1:51 am
If anyone can answer the following questions ,
even not all, i will be appreciated !!!!!!!!!

Hint : for every questions only requires one single answer
and the answers are all come from the periodic table!

1. has a nucleus containing just one proton
2. is an alkali metal with two electrons in its +1 ion
3. is a highly reactive metal formed in the electrolysis of table salt
4. has a first ionization energy of 418 kj/mol
5. has a major use as a conducting metal in electrical wiring.
6. is the first alkali metal with a completed 3d subshell
7. has a symbol that was derived from its Latin name argentum
8. is an alkali metal with atomic number 55
9. has a Latin name aurum, derived from the Latin word for dawn, aurora
10. is the first element in the alkaline earth group of elements
11. burns with a bright white light and is used in flares and fireworks
12. is the metallic component of the mineral marble
13. is a metal used to galvanize iron to protect it from rusting.
14. has 36 eletrons in its 2+ ion.
15. is used along with nickel in one type of rechargeable battery.
16. is a metal with an outermost electron configureation of 6s^2.
17.is a liquid metal, which once went by the name of quicksilver.
18. is the first member of group 13 (IIA) of the modern periodic table.
19. is a lightweight metal obtained from bauxite and used for making beverage cans.
20. is a transition metal with 39 protons in the nucleus.


thank you for anyone who answered it

回答 (2)

2008-04-07 2:57 am
✔ 最佳答案
1. Hydrogen (H)
2. Lithium (Li)
3. Sodium (Na)
4. Potassium (K)
5. Copper (Cu)
6. Rubidium (Rb)
7. Silver (Ag)
8. Caesium (Cs)
9. Gold (Au)
10. Beryllium (Be)
11. Phosphorus (P)
12. Calcium (Ca)
13. Zinc (Zn)
14. Strontium (Sr)
15. Cadmium (Cd)
16. Barium (Ba)
17. Mercury (Hg)
18. Boron (B)
19. Aluminum (Al)
20. Yttrium (Y)
2008-04-07 3:16 am
11. The answer should be "magnesium" instead.


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