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Likurg_2 [28]
3 years ago
8

Which group 2A element has the largest ionic radius?

Chemistry
2 answers:
zvonat [6]3 years ago
7 0

Explanation:

Group 2A elements are Beryllium, Magnesium, Calcium, Strontium, Barium and Radium.

An atom which is largest in size will have the largest ionic radius. Also, it is known that as we move down a group size of atoms increases.

So, in group 2A Beryllium is smallest in size whereas Radium is the largest in size.

Thus, we can conclude that group 2A element which has the largest ionic radius is radium.

ivann1987 [24]3 years ago
5 0
The answer to the question is radium (Ra)
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what do the symbols tell you about the conditions of the reaction shown to the right check all boxes that apply
alukav5142 [94]

Answer:

Sorry but erm was their supposed to be a image attach with it

Explanation:

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3 years ago
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Green plants absorb sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compound
Kamila [148]

Answer:

698 \ THz

Explanation:

Data provided as per the question below:-

Wavelength = 430.nm

The computation of the frequency of the light is shown below:-

Frequency = Velocity of light ÷ Wavelength

The  Velocity of light = = {3.0 \times 10^8 \ m/s}

Wavelength = 430 nm = 4.30 \times 10^-^7 m

Frequency = \frac{3.0 \times 10^8 \ m/s}{4.30 \times 10^-^7}

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Therefore for determining the frequency we simply applied the above formula.

4 0
3 years ago
Can someone help me with this?
IrinaVladis [17]

B. The rate of particle collisions increased with a higher temperature.

An <em>inference </em>is a guess that you make <em>based on an observation</em>. You can’t see the particles, so you are guessing (a) that they exist and (b) that the rate of their collisions increases with a higher temperature.

A, C, and D are all incorrect because they are <em>observations</em> that you make.

3 0
3 years ago
What will happen if you add more solute to a saturated solution?
Annette [7]
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4 0
3 years ago
What is the Net Ionic equation for this chemical reaction: FeBr2+Na2S=FeS+2NaBr​
Artyom0805 [142]

Answer: Fe<em>(aq)</em>+S<em>(aq)</em>=FeS<em>(s)</em>

Explanation: The Sodium and Bromine are spectator ions because they don't react with anything, you can see this by writing the ionic equation like so:

1.) Molecular formula (given): FeBr2 (aq)+Na2S (aq)= FeS(s)+2NaBr(aq)

Each dissolved FeBr2 breaks up into one Fe with a charge of 2+ and two Br with a negative charge. This gives you:

Fe(aq)+ 2Br(aq)+Na2S(aq)=FeS(s)+2NaBr

2.) Now repeat what was shown with the other compounds in the given molecular formula, and pay attention to the states that each ion is in (solid, liquid, aqueous, gas) because this will give you the ionic equation, which from there you can get rid of any ions that don't change amount or state.

3.) Ionic formula: Fe(aq)+ <u>2Br(aq)</u>+<u>2 Na(aq)</u>+S (aq)=FeS(s)+<u>2 Na(aq)+2Br(aq)</u>

4.)When you've derived a total ionic equation (above), you'll  find that some ions appear on both sides of the equation in equal numbers. For example, in this case two Na cations and two Br anions appear on both sides of the total ionic equation. What does this mean? It means these ions don't participate in the chemical reaction. They're present before and after the reaction. Nothing happens to them. So those are removed and you're left with the net ionic: Fe(aq)+S(aq)=FeS(s)

Hope this helps :)

7 0
3 years ago
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