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kakasveta [241]
4 years ago
8

Which has the smallest ionization energy: Boron, Carbon, Aluminum or Silicon?

Chemistry
1 answer:
7nadin3 [17]4 years ago
6 0
Aluminum has smallest ionization energy here 'cause it decreases down the group & increases from left to right.
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Which elements form ions that are usually colored in solid compounds and in solution? A. alkali metals B. alkaline earth metals
ollegr [7]

Answer:

C. transition elements

Explanation:

Transition elements are groups of metallic elements that have partially filled d orbitals. They occupy the d-block of the periodic table (Group 3-12). Examples of elements that fall under this category are Nickel (Ni), Cobalt (Co), Copper (Cu), Zinc (Zn) etc. Transition metals have outstanding properties that distinguishes them from other elements.

One of these properties is their ability to form colored compounds due to their unfilled d electron shells. They form ions that are usually colored in solid compounds and in solution.

4 0
3 years ago
A closed container is any container sealed by means of a lid or other device that neither liquid nor vapor will escape from at _
alex41 [277]
A closed container is any container sealed by means of a lid or other device that neither liquid nor vapor will escape from at ordinary temperatures. “Ordinary” is the answer, hope this helps! :)
3 0
4 years ago
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Guys please help me I have a final exam
Natasha2012 [34]

Explanation:

ok that is ans k............

4 0
3 years ago
An energy of 6.8 x 10^-19 J/atom is required to cause an aluminum atom on a metal surface to lose an electron.
Nana76 [90]

Wavelength of the light is 2.9 × 10⁻⁷ m.

<u>Explanation:</u>

Planck - Einstein equation shows the relationship between the energy of a photon and its frequency, and they are directly proportional to each other and  it is given by the equation as E = hν,

where E is the energy of the photon

h is the Planck's constant = 6.626 × 10⁻³⁴ J s

ν is the frequency

From the above equation, we can find the frequency by rearranging the equation as,

ν = $ \frac{E}{h} = $ \frac{6.8 \times 10^{-19}}{6.626\times10^{-34}} = 1.03\times10^{15} s^{-1}

Now the frequency and the wavelength are in inverse relationship with each other.

ν × λ = c

It can be rearranged to get λ as,

λ = c / ν

 = $\frac{3\times 10^{8} ms^{-1}}{1.03\times10^{15}s^{-1}} = 2.9\times 10^{-7} m

So wavelength is 2.9 × 10⁻⁷ m.

6 0
4 years ago
What alcohol is formed formed when the Alkene is treated with H2O in the presence of h2so4
gogolik [260]

Explanation:

Ethanol is made by the hydration of ethylene in the presence of a catalyst such as sulfuric acid (H 2SO 4).

4 0
3 years ago
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