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2 years ago

What do you think is the reason for an increasing atomic radius within one group?

Chemistry

2 answers:

Anna35 [415]2 years ago

7 0

Answer:

As you go down a group on the periodic table, you get more electron shells and therefore a larger atomic radius.

Marina86 [1]2 years ago

6 0

Periodic trends are patterns on the periodic table that
illustrate elements' characteristics.
Significant trends are atomic radius, metallic
reactivity, electronegativity, electron affinity, and
ionization energy.
Atomic radius and metallic reactivity trends:
They increase when they move down a group and left
across a period.
Electronegativity, electron affinity, and ionization
energy trends:
They increase when they move up a group and right
across a period.

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What other substance (besides salt) could you sprinkle over ice to affect how fast it melts? Describe how you would test the sub

Georgia [21]

Answer:

See explanation

Explanation:

Salt makes ice to melt faster than it usual. Sugar is another substance that influences the melting time of ice.

If i have a sample of pure ice and another sample of ice treated with sugar. I have to maintain the both initially at 0 degrees temperature and have a stop clock to measure the melting time.

I will ultimately notice that the sample of ice treated with sugar will melt faster than the pure sample of ice due to the presence of an impurity.

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3 years ago

Which element is similar to the properties bromine?

Ainat [17]

Answer: Fluorine

Explanation: It belongs in the same group as Bromine

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3 years ago

How many dots should be shown in the Lewis dot diagram of oxygen? (1 point)

deff fn [24]

Answer: the answer is number 3 which is 6

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3 years ago

You have identified a substance to be solid in nature. which characteristics will justify your identification?

weeeeeb [17]

This question includes four answer choices: A. definite volume, highest molecular motion, highest kinetic energy B. indefinite volume, least molecular motion, highest kinetic energy C. definite volume, least molecular motion, lowest kinetic energy D. definite volume, no molecular motion, lowest kinetic energy Solids do not have the highest molecular motion (on the contrary they have the least molecular motion), so you can discard option A. Solids have a definite volume and the highest kinetic energy (given that they have the least molecular motion), so you discard option C. Molecules always have a vibrational motion, so you discard option D. Option C, have only characteristics that correctly describes a solid: definite volume, least molecular motion, lowest kinetic energy. Therefore, the answer is the option C.

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3 years ago

Read 2 more answers

What is the Chemical Formula and Net Ionic Equations for all three solutions.

AlladinOne [14]

Answer:

See answer below

Explanation:

As you are asking for chemical formula and ionic equation, then, I will assume that after the station #3 below, are the solutions you are requiring.

You are also not specifing if you want for example, result of solution 1 + solution 3. If you need that, please post that on another question.

Now for the chemical formula, you need to identify the elements in all 3 solutions, and also the type of compound.

1. Solution 2 Potassium Iodide:

In this case we have Potassium on one side, and Iodine on the other side, the symbol for those are K and l. As Potassium have the +1 oxidation state, cause is the only one that it can have, when it's next to an halide like chlorine or bromine, it will form a binary salt. The halides, usually work with the lowest oxydation state. In the case of Iodide it will be -1, so, the formula will be:

And the net ionic equation will be the chemical equation that shows how the charges and atoms are balanced. In this case it would be:

K⁺ + I⁻ ------> KI

2. Solution 1 and 3, Lead (II) nitrate and Sodium carbonate:

In this case I will work with both, because both of the solution are tertiary compounds. In this cases, we have two tertiary salt, The Sodium symbol is Na, and is working with it oxydation state +1. Carbonate is an anion and have the formula CO₃ working with the oxydation state -2. Lead can work with oxidation state +2 and +4. It's symbol is Pb. Nitrate is NO₃ and works with oxydation state -1 instead.

The chemical formula and ionic equation for both will be:

Lead(II) nitrate: Pb(NO₃)₂

Sodium Carbonate: Na₂CO₃

And the net equations:

Lead nitrate: Pb²⁺ + 2NO₃⁻ ------> Pb(NO₃)₂

Copper sulfate: 2Na⁺ + CO₃²⁻ -------> Na₂CO₃

Hope this helps

6 0

3 years ago