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cluponka [151]
3 years ago
5

Which of these elements is a metal?

Chemistry
2 answers:
Dennis_Churaev [7]3 years ago
8 0

The correct answer for above statement is:

Hafnium (atomic number 72) is a metal.

Explanation:

Hafnium is a chemical element including symbol Hf and atomic number 72. A bright, silvery gray, tetravalent transition metal, hafnium chemically relates zirconium and is observed in many zirconium minerals.Hafnium is practiced in wires and electrodes. Hafnium is practiced for nuclear reactor charge rods because of its ability to receive neutrons and its good mechanical and corrosion protection qualities.


Andre45 [30]3 years ago
4 0
Hafnium (atomic number 72) is a metal. 
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6 At STP, which element is a good conductor of electricity?(1) chlorine (3) silver
alexgriva [62]
For an object to conduct electricity it should have free or delocalised electrons that are free to pass the charge and hence take part in conducting electricity.
From the given choices
Chlorine is a halogen existing as a diatomic gas. Iodine too is a halogen and 2 Iodine atoms held together by covalent bond. Cl - Cl bonds and I-I bonds are  covalent bonds. the outer electrons of Cl and I take part in covalent bonds therefore they are fixed and not free to move about. therefore no free electrons to conduct electricity.
Sulfur is a solid that too is held together by covalent bonds so it does not have free electrons to conduct electricity.

Silver is a metal and a general property of metals are their ability to conduct electricity.
metal structure are metal ions tightly packed together. when the metal atoms are tightly packed their valence electrons are removed and delocalised. Positively charged metal ions are embedded in a sea of delocalised electrons.
therefore there are delocalised electrons that can conduct electricity 


answer is 3) silver
3 0
3 years ago
Read 2 more answers
Please help me with my "Math Skills" thanks
AURORKA [14]
I have provided the steps to figure out the number of atoms in the chemical compound.

7 0
3 years ago
Even though we can't digest it, fiber is an important part of digestion because it __________
Rzqust [24]

Answer:

1.<em>C</em><em>.</em><em>Keeps</em><em> </em><em>blood</em><em> </em><em>sugar</em><em> </em><em>low</em>

Explanation:

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3 0
3 years ago
What is the molecular formula of the structure below?
taurus [48]

Answer:

C₆H₆

Explanation:

Each border of the figure represents 1 atom of carbon. We have 6 borders = 6 atoms of carbon.

Each atom of carbon form 4 bonds. All the carbons are doing a double bond and a single bond with other carbons. That means are bonded 3 times. The other bond (That is not represented in the figure. See the image) comes from hydrogens. As we have 6 carbons that are bonded each 1 with one hydrogen. There are six hydrogens and the molecular formula is:

<h3>C₆H₆</h3>

This structure is: Benzene

8 0
3 years ago
If the mass of an object is 10 kg and the acceleration of an object due to
mars1129 [50]
Hmm the answer is 2.454

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3 years ago
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