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elixir [45]
4 years ago
7

The charges for four ions are sodium (Na) +1, calcium (Ca) +2, fluorine (F) –1, and sulfur (S) –2. Which would be an ionic bond

that could form from any of these ions?
A.NaCa2
B.Na2S
C.CaF
D.FS

Physics
2 answers:
FromTheMoon [43]4 years ago
7 0

Answer: B. Na_2S

Explanation: An ionic bond is formed when an element completely transfers its valence electron to another element. Ionic bond is formed between a metal and an non-metal.

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.  

Here Na is having an oxidation state of +1 and sulfur has an oxidation state of -2. Thus they combine to form neutral Na_2S.

Ca is having an oxidation state of +2 and fluorine has an oxidation state of -1. Thus they combine to form neutral CaF_2. and not CaF.

Ludmilka [50]4 years ago
3 0
The correct answer would be B. It is the compound Na2S that forms an ionic bond from the given ion above. From the choices, it is the only compound that exist and is available. Metals cannot react with another metal as well as nonmetal to nonmetal. 
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3 years ago
How long( in hours, will it take for 500 000 C of charge to flow through a diode if it requires
Alina [70]

Answer:

277.78 hours

Explanation:

The formula for calculating the amount of charge is expressed as;

Q = It

I is the current

t is the time

Given

I =0.05A

Q = 50,000C

Required

Time t

Recall that: Q = It

t = Q/I

t = 50,000/0.05

t = 1,000,000secs

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1,000,000secs  = 1,000,000/3600

1,000,000secs = 277.78 hours

Hence it will take 277.78 hours for the charge to flow through the diode

6 0
3 years ago
The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?
Lelu [443]

Answer:

170 W

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Applying

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From the question,

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The right option is A. 170 W

3 0
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givi [52]

Answer:

a

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