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3 years ago

Which of the following characteristics indicates that an atom is unstable?

Chemistry

2 answers:

elena55 [62]3 years ago

8 0

Answer:

Explanation:

An atom can be considered unstable in one or two ways. If it pickes up or loses an electron,it becomes electrically charged and highly reactive.Intabability can also occur in the nucleus when the number of protons and neutrons is unbalanced.

larisa86 [58]3 years ago

7 0

Answer:

the answer is A full valence shell

Explanation:

hope it helps

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What substance is a combination of different atoms

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The final charge on each of the three separated spheres in part (b) is +3.0 μC. How many electrons would have to be added to one

marishachu [46]

Answer:

$1.873\times 10^{13}$ electrons should be added to one of these spheres to make it electrically neutral.

Explanation:

Total charge on each sphere = +3.0 μC = $3\times 10^{-6} C$

$1 \mu C=10^{-6} C$

In order to neutralize the positive charge equal magnitude of negative charge is to be added.

Total charge electrons, Q= -3.0 μC = $-3\times 10^{-6} C$

Number of electrons = n

Charge on a single electron, e = $-1.602\times 10^{-19} C$

Q = n × e

$-3\times 10^{-6} C=n\times (-1.602\times 10^{-19} C)$

$n=\frac{-3\times 10^{-6} C}{-1.602\times 10^{-19} C}=1.873\times 10^{13}$

$1.873\times 10^{13}$ electrons should be added to one of these spheres to make it electrically neutral.

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3 years ago

How often do girls normally experience menstruation a.once every 30 days b. once every 29 c.once every 28 d.once every 27

kramer

Answer:

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3 years ago

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N2H4+H2O2 ——> N2+H2O coefficient

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Answer:

N2H4 + 2H2O2 ---->N2 + 4H2O

Explanation:

N=2 N=2

H=6 ->8 H=2 ->8

O=2 -> 4 O=1 -> 4

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