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2 years ago

A negative ion is (larger/smaller) than its parent atom. Why?

Chemistry

1 answer:

Kay [80]2 years ago

5 0

Answer:

When an atom attracts extra electrons it becomes a negative ion. The negative ion is larger than the original atom. The positive nucleus remains the same, with the same attractive force. However, this attractive force is now pulling on more electrons and therefore has less effect.

Positive ions are formed by removing one or more electrons from the outermost region of the atom. The opposite is true of negative ions. When electrons are added to form an anion, the increased electron-electron repulsions cause the electrons to spread out more in space. Thus, anions are larger than their parent atoms.

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What variable represents specific heat in the equation Q = mcAT?

Elan Coil [88]

Answer: A. The variable c

============================================

Explanation:

Q = heat transferred

m = mass

c = specific heat

$\Delta T$ = delta T = change in temperature

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2 years ago

Pls help asap!! plssss

kvv77 [185]

AgNO₃+NaCl⇒AgCl+NaNO₃

<h3>Further explanation</h3>

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Reaction

AB + CD⇒AD + CB

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2 years ago

There is a 50 g sample of ra-229. It has a half-life of 4 minutes.how much will be left after 12 minutes? a. 3.13 g b. 6.25 g c.

polet [3.4K]

It's B. 6.25

first divide 50/2

then divide 25/2

after that divide 12.5/2

Then you get 6.25

Hope it helps!

3 0

2 years ago

The answer to a chemistry question

Otrada [13]

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2 years ago

If a runner maintains a constant speed of 12 miles an hour how long will it take to complete a half marathon race of 13.1 miles?

Nutka1998 [239]

At 12 mph, how long does it take to go 13.1 miles?

We know that distance = rate * time
So we know that 13.1 = 12 * time
We can now see that time = 13.1/12 = 1.092 (hours)
That's approximately 1 hour and .092*60=5.52 minutes.

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2 years ago