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trasher [3.6K]
3 years ago
15

What is the electron structure of a beryllium ion with a net ionic charge of +2?

Chemistry
2 answers:
yuradex [85]3 years ago
8 0

Answer:

Be²⁺: 1s²

Explanation:

The electron configuration is as follows:

Be: 1s²2s²

Be²⁺: 1s²

Be²⁺ ion has two electrons in the first shell. This is a stable electron configuration. The other stable electron configuration is an octet where there are eight valence electrons.  

The electron configuration of Be²⁺ is the same as that of He (helium). Helium is a noble or inert gas.  

Be²⁺ = He = 1s²

Otrada [13]3 years ago
4 0
It will be the core of the atom surrounded by one electron cloud with two electrons the second electron cloud with the two other electrons will be omitted because those electrons were lost to give it a positive charge. electrons and protons come in equal numbers at most ground states and that is why. For periodic table however the proton count will always be the same count as the electrons.
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<span>h = 6.626 * 10^-34 J/s </span>
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<span>10% speed of light = 10% * 3*10^8 = 3*10^7 m/s, i dont have my graphing calc with me right now so i leave the technicalities up to you </span>
8 0
3 years ago
If the bag was made from a metal (like sturdy aluminum foil), do you think it would lose its heat faster or slower than the plas
Luden [163]

I think it would lose its heat faster than the plastic bags because of higher conductivity feature.

<h3>What is conduction?</h3>

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We know that metals are good conductors so we can conclude that it would lose its heat faster than the plastic bags bof higher conductivity feature.

Learn more about heat here: brainly.com/question/13439286

5 0
2 years ago
How many phases are in a homogeneous mixture??
Mars2501 [29]
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7 0
3 years ago
Read 2 more answers
A metal, M, forms an oxide having the formula MO2 containing 59.93% metal by mass. Determine the atomic weight in g/mole of the
Damm [24]

Answer:

See solution.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to set up the formula for the calculation of the by-mass percentage of the metal:

\%  M=\frac{m_M}{m_M+2*m_O}*100 \%\\\\59.93\%  =\frac{m_M}{m_M+32.00}*100 \%

Thus, we solve for the molar mass of the metal to obtain:

59.93\% (m_M+32.00) =m_M*100 \%\\\\m_M*59.93\% +1917.76\% =m_M*100 \%\\\\m_M=47.86g/mol

For the subsequent problems, we proceed as follows:

a.

4.00gO_2*\frac{1molO_2}{32.00gO_2}=0.125molO_2

b.

0.400molH_2S*\frac{2molH}{1molH_2S}*\frac{6.022x10^{23}atomsH}{1molH}=4.82x10^{23}atomsH

c.

0.235gNH_3*\frac{1molNH_3}{17.03gNH_3} *\frac{3molH}{1molNH_3}*\frac{6.022x10^{23}atomsH}{1molH}=2.49x10^{22}atomsH

Regards!

7 0
3 years ago
The periodic table below shows which elements are metals, nonmetals, and metalloids. the element with the chemical symbol ______
aleksandr82 [10.1K]
H.
represents hydrogen element. under non metal classification.

for others, you'll find them under metal element classification.
8 0
3 years ago
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