2 years ago

Which statement about ionic bonds is true?

Chemistry

1 answer:

Jobisdone [24]2 years ago

3 0

The answer is b :).

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Using the periodic table, complete the table to describe each atom. Type in<br> your answers.

sladkih [1.3K]

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2 years ago

The black, granular material that fills a dry cell in a common flashlight (between the carbon rod and the zinc shell) is mangane

mestny [16]

Answer: c. +4

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

$Mn:25:1s^22s^22p^63s^23p^64s^23d^{5}$

$Mn^{4+}:21:1s^22s^22p^63s^23p^63d^1$

$O:8:1s^22s^22p^4$

$O^{2-}:10:1s^22s^22p^6$

Here manganese is having an oxidation state of +4 called as cation and oxygen forms an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged to give $Mn_2O_4$ which written in simplest whole number ratios to give neutral $MnO_2$

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3 years ago

Which of the following properly lists the metals in order from decreasing to increasing ease of oxidation?

Sloan [31]

I know it is either B or D, since I know that K will oxidize in water, and Ag will have a tougher time oxidizing. I am going to lean towards D for my answer.

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2 years ago

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How does a salt bridge improve a battery?

OlgaM077 [116]

Answer:

A. It keeps the electrolyte solutions neutral.

Explanation:

The electrons flow from the anode to the cathode and the problem is that the cathode may become too negative. The purpose of the salt bridge is to maintain charge balance because the electrons are moving from one-half cell to the other.

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5. A sample of methane has a volume of 225 mL at 0.650 atm of pressure. What will the new volume be if the

Norma-Jean [14]

Answer:

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Explanation:

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