1 thought on “周 and platinum belong to the metal of the same family in the element cycle table (as shown in the figure). They can be used as the synthetic component of jewelry. The price of platinum is getting higher and higher”
Leave a Comment
You must be logged in to post a comment.
(1) According to the method of the atom, use the element symbol to represent an atom, and the multiple atoms are added to the corresponding number in front of the element symbol. Therefore, the three platinum atoms are expressed as 3PT; Therefore, the answer is: 3pt; PD.
(2) Their relative atomic mass difference is 195.08-106.42 = 88.66, and the number of atomic order = the number of proton, so the atomic nucleus is 78-46 = 32 protons, so the answer is: 88.66; 32.
(3) Platinum metal and tadpole metals are silver -white solids, but the same size of the size of gold jewelry weighs much lighter than platinum, and it is easier to crack, so the answer is: silver white; the same size size; Gold jewelry weighs much lighter than platinum, and it is easier to crack.
(4) According to the information in the question, the surface will be darkened after wearing the gold jewelry for a period of time.