Answer:
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The answer is (3) metallic. Cobalt is a transition metal, so it can't be covalent bonds, which bond non-metals, therefore eliminating choice 1 and 2. Ionic bonds are between metals and non metals, but solid cobalt does not have a non metal, eliminating choice 4 as well. Metallic bonds are bonds between metals, therefore the answer is (3) metallic.
Answer:
1-A
2-B
Explanation:
2- mantle is liquid and moves crust
You mix 35mL of 0.54M NaI with 14mL of 0.84M Pb(NO3)2.
When a volcano erupts magma comes from the top when the magma cools down it hardens and leaves a hard surface
