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2 years ago

10

Ions can have a positive or negative charge. false or true

2 answers:

Fudgin [204]2 years ago

7 0

True. Ions can have a positive or negative charge.

natta225 [31]2 years ago

6 0

I want to say that its true

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Climate is the __________________ average weather conditions that occur in a particular region.

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Explanation:

Climate is the period of time average weather condition which occurs at a place

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Which of the following organisms is reproduced by regeneration?

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Which of the following indicates that an exothermic reaction has taken place?

Tomtit [17]

<h2>Answer:</h2>

The option B is correct option. Which is release of heat and/or light energy .

<h3>Explanation:</h3>

According to the definition of exothermic reaction :

<em>An exothermic reaction is a chemical reaction that releases energy by light or heat.</em>

From definition option B (release of heat and/or light energy) indicates that an exothermic reaction has taken place.

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How do I write an introduction in chemistry report? the experiment is seeing which ionic compounds produce precipitates.

tensa zangetsu [6.8K]

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Explanation:

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2 years ago

Write equations that show the processes that describe the first, second, and third ionization energies for a gaseous gadolinium

Inessa [10]

Answer:

Gd(g) → $Gd^{+}(g) + e^{-}$ , $Gd^{+}(g)$ → $Gd^{2+}(g) + e^{-}$ , $Gd^{2+}(g)$ → $Gd^{3+}(g) + e^{-}$

Explanation:

Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The first ionization energy is the energy required to remove the valence electron(outermost) from a neutral atom:

Gd(g)→ $Gd^{+}(g) + e^{-}$

The second ionization energy is the energy required to remove next/second electron from $x^{+}$ ion. The second ionization energy is always higher than the first:

$Gd^{+}$ (g) → $Gd^{2+}(g) + e^{-}$

The third ionization energy is the energy required to remove third electron from $x^{2+}$ ion:

$Gd^{2+}$ (g) → $Gd^{3+}(g) + e^{-}$

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2 years ago