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3 years ago

HELP PLEASE

Chemistry

1 answer:

Kisachek [45]3 years ago

5 0

The answer is b. hot spots

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Which electrons in an atom have the highest energy level

AleksandrR [38]

Valence electrons hope this helps

4 0

3 years ago

What is the name of the product isotope formed when Thorium-234 decays by beta decay?

defon

Answer:

protactinium-234,

Explanation:

This is what happens when thorium-234 releases a W- boson, which then decays to an electron and an electron antineutrino.

7 0

3 years ago

elect the correct answer. The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of

deff fn [24]

Answer:

D. Sr < Ca < Be

Step-by-step explanation:

Ionization energy decreases from top to bottom within a Group, because the valence electrons are further from the nucleus and therefore easier to remove.

Thus, Sr has the lowest ionization energy and Be the highest.

The correct order is Sr < Ca < Be.

3 0

3 years ago

Write an equation to show how HC2O4− can act as a base with HS− acting as an acid.

Artyom0805 [142]

An acid donates $H^{+}$ ion in aqueous solution. A base accepts $H^{+}$ ion in aqueous solution.

The equation representing the acid base reaction of $HC_{2}O_{4}^{-}$ and $HS^{-}$ :

$HC_{2}O_{4}^{-}(aq) + HS^{-}(aq) ----> H_{2}C_{2}O_{4}(aq)+S^{2-}(aq)$

In the above reaction, as $HC_{2}O_{4}^{-}$ acts as a base it is accepting the hydrogen ion from $HS^{-}$ . Similarly, $HS^{-}$ donates its hydrogen ion to $HC_{2}O_{4}^{-}$ acting as an acid.

7 0

4 years ago

How do the physical and chemical properties of calcium iodide (CaI2) compare to carbon disulfide (CS2) and sodium fluoride (NaF)

Yuri [45]

Answer:

Sodium fluoride and calcium iodide are ionic and carbon disulfide covalent.

Explanation:

Hello,

Since both calcium iodide and sodium fluoride are ionic compounds, one could identify that in comparison with carbon disulfide which is covalent:

- they've got both a cation and an anion.

- they are crystalline solids.

- they've got higher fusion points due to stronger electrostatic attractive forces.

- they don't conduce the electricity when solid but do it when liquid or in aqueous phase solutions.

Unlike sodium fluoride and calcium iodide, carbon disulfide:

- doesn't conduct the electricity.

- doesn't form charged particles in aqueous solutions.

- it tends to be liquid or gas due to weak intermolecular forces.

Best regards.

6 0

3 years ago