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3 years ago

Which type of bond is found between atoms of solid cobalt?

Chemistry

2 answers:

ivanzaharov [21]3 years ago

7 0

I believe the answer is (3) metallic. Hope it helped! :)

Vsevolod [243]3 years ago

3 0

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.

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Carbon diselenide (CSe2) is a liquid at room temperature. The normal boiling point is 125°C, and the melting point is –45.5°C. C

Tema [17]

Answer:

Explanation: The strengths of the inter molecular forces varies as follows -

$CO_{2}< CS_{2} < CSe_{2}$

The normal boiling point of CSe2 is 125°C and that of CS2 is 116°C, which explains the trend that as we move down the group, the boiling point of e compound increases as the size increases.

This usually happens because larger and heavier atoms have a tendency to exhibit greater inter molecular strengths due to the increase in size . As the size increases, the valence shell electrons move far away from the nucleus, thus has a greater tendency to attract the temporary dipoles.

And larger the inter molecular forces, more tightly the electrons will be held to each other and thus more thermal energy would be required to break the bonds between them.

5 0

3 years ago

The ground electron configuration of a Tc atom is (Kr) 5s2 4d5. What is the electron configuration of a Tc3 ion

Sveta_85 [38]

Answer:

2:1 of  Tc in the periodic table

3 0

2 years ago

If 3.6 g of aluminum completely reacts, how much Al2O3 (in grams) can be produced

marissa [1.9K]

The amount in grams of Al₂O₃ produced is approximately 6.80 g.

Aluminium reacts completely with oxygen(air) to produce Al₂O₃. The reaction can be represented with a chemical equation as follows:

AL + O₂ → Al₂O₃

Let's balance it

4AL + 3O₂ → 2Al₂O₃

4 moles of Aluminium reacts with 3 moles of Oxygen molecules to produce 2 moles of Aluminium oxide. Therefore,

Since, aluminium reacts completely, it is the limiting reagent in the reaction. Therefore,

Atomic mass of AL = 27 g

Molar mass of Al₂O₃ = 101.96 g/mol

4(27 g) of AL gives 2(101.96 g) of Al₂O₃

3.6 g of AL will give ?

cross multiply

mass of Al₂O₃ produced = 3.6 × 203.92 / 108 = 734.112 / 108 = 6.797

mass of Al₂O₃ produced = 6.80 g.

8 0

3 years ago

When water boils in a pan on a hot burner, heat gets to the water mainly by. A. absorption of heat from the air in the room. B.

xxTIMURxx [149]

B. The heat travels to the pan and therefore heats the water

5 0

3 years ago

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When an acid and base combine, they react chemically. the result is water and a(n) ___

Ksivusya [100]

Mixing a base with an acid results in a chemical reaction called neutralization. The result is a perfectly balanced solution of salt and water with a pH of 7 if the acid and base are balanced properly. Depending on the bases and acids used, it can be a dangerous experiment.

Hope I helped you lots!! :3

5 0

3 years ago

Read 2 more answers