A. Sodium is correct.
Sodium is an alkali metal.
Aluminum is a post-transitional metal- still a metal but it’s character is not as metallic as sodium.
Silicon is a metalloid- it has characteristics from both the metals and the non-metals.
Phosphorous is a non-metal.
My guess on that molecule is nucleus , sorry if it’s not correct
Answer:
Carbon is non metal because it is found in the right side of the periodic table while calcium is metal because it is found in the left side of the periodic table.
Answer:
Explanation:
When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.
Answer: I would say its either exit door or the last one.
Explanation: Hope this helps plz mark brainliest.
