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2 years ago

What are two elements that form a large number of bonds and that both have similar properties to carbon?

1 answer:

3 0

Silicon and Germanium. You can conclude it from its position in the periodic table. Silicon and Germanium are in the same group of the Carbon. That implies that all three have the same number of electrons in the outer orbital, which is responsible for the bonds.

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Genrish500 [490]

Anti-acids because they contain Alkaline ion that chemically neutralizes stomach acid

8 0

2 years ago

Why does a transformer require AC rather than DC?

LuckyWell [14K]

So if the voltage in case of DC is same as AC, then DC current is larger than ACcurrent. A transformer works on the principle of electromagnetic induction. It means that the change in magnetic flux across a coil induces a potential difference across the same.

Hope this sorta helps! I'm new to this!

5 0

2 years ago

Read 2 more answers

If the half-life of Carbon-14 is 5700 years, how many years would it take a sample to decay from 1 gram to 31.3 mg

andrew-mc [135]

Answer:

28500 years

Explanation:

Applying,

A = A'( $2^{x/y}$ )............... Equation 1

Where A = Original mass of Carbon-14, A' = Final mass of carbon-14 after decaying, x = total time, y = half-life.

From the question,

Given: A = 1 g, A' = 31.3 mg = 0.0313 g, y = 5700 years.

Substitute these values into equation 1

1 = 0.0313( $2^{x/5700}$ )

$2^{x/5700}$ = 1/0.0313

$2^{x/5700}$ = 31.95

$2^{x/5700}$ ≈ 32

$2^{x/5700}$ ≈ 2⁵

Equating the base and solve for x

x/5700 ≈ 5

x ≈ 5×5700

x ≈ 28500 years

3 0

2 years ago

Why are leaves different colors?

Marina86 [1]

Why are leaves different colors?
The chlorophyll breaks down

6 0

2 years ago

Name two compounds with more exothermic lattice energies than scandium oxide and justify your choice.

N76 [4]

Answer:

1 . $Al_2O_3$

2. $TiO_2$

Explanation:

The more stable the ionic compound, the more is it lattice energy.

The more the charge on the cation and the anion, the greater is the lattice energy.
The less the size of the cation and the anion, the greater is the lattice energy.

Scandium oxide ( $Sc_2O_3$ ) is an oxide in which $Sc^{3+}$ behaves as cation and $O^{2-}$ behaves as anion.

The compounds which has higher lattice energy than scandium oxide are:

1 . $Al_2O_3$

This is because the charge are same on the cation and the anion as in the case of the Scandium oxide but the size of the cation $Al^{3+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

2. $TiO_2$

This is because the charge on the cation $Ti^{4+}$ is greater than that of $Sc^{3+}$ and also the size of the cation $Ti^{4+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

3 0

2 years ago