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mel-nik [20]
3 years ago
8

Choose the statement below that correctly describes electrons.

Chemistry
1 answer:
frutty [35]3 years ago
3 0

Answer:

d. Electrons have a negative charge and are lighter than protons

Explanation:

The best statement that describes electrons is that electrons are negatively charged and are lighter than protons.

There are three known subatomic particles which are:

  • Protons which are the positively charged particles within an atom.
  • Electrons are the negatively charged particles
  • Neutrons do not carry any charges.

The mass of the protons and neutrons are similar.

Electrons are lighter than both protons and neutrons.

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How many pi bonds are in the oxalate ion (C2O42-)?
suter [353]

Answer:there are 13

Explanation:

4 0
3 years ago
Que es la nanotecnologia ?<br> porfis lo nesecito urgente para antes de las 10
kenny6666 [7]

Answer:

Se aclama la nanotecnología por tener el potencial de aumentar la eficiencia del consumo de energía, ayudar a limpiar el medio ambiente y resolver los principales problemas de salud. Se dice que puede aumentar masivamente la producción de fabricación a costos significativamente reducidos.

espero que esto ayude

5 0
3 years ago
Iron is a metal. The structure of iron is described as a lattice of positive ions in a sea of
KATRIN_1 [288]

Answer: 1and 4

Explanation: iron is an element not an alloy. An ionic lattice is not bonded covalently.

6 0
3 years ago
An X-ray beam with λ = 157 pm incident on the surface of a crystal produced a maximum reflection at an angle of θ = 28.5 ∘. Assu
WARRIOR [948]

Answer:

The separation between layers of atoms in the crystal is 164.52 pm.

Explanation:

Formula used

n \lambda = 2d\sin \theta (Bragg's law)

Where :

n = an order of reflection (integer)

\lambda = wavelength of the beam incident X-ray

d = spacing between the layer

θ = incident angle ( angle between ray and scatter plane)

We have :

λ = 157 pm

θ = 28.5°

n = 1

d = ?

1\times 157 pm= 2d\sin (28.5^o) (Bragg's law)

d=\frac{1\times 157 pm}{2\times \sin (28.5^o)}=164.52 pm

The separation between layers of atoms in the crystal is 164.52 pm.

8 0
3 years ago
When an atom _______<br> an electron, it charge is negative .
nikitadnepr [17]

Answer:

Gains

Explanation:

If it gains an electron it causes the atom to become negative since electrons are negative and an overall charge of an atom is neutral. Therefore, it would become negative.

Hope this helps :)

3 0
3 years ago
Read 2 more answers
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