1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
10

All of the alkali metals, Group 1, have one valence electron. which of these would represent the oxidation number of the alkali

metals such as lithium and sodium
Physics
1 answer:
Georgia [21]3 years ago
6 0

Answer:

+1

Explanation:

The oxidation state of the alkali metals such as lithium and sodium which belongs to the first group will be +1.

  • For simple ions, the oxidation number is the charge they carry.
  • Oxidation number is the formal charge assigned to an atom.
  • Metals generally have a positive oxidation number which shows their readiness to lose electrons.
  • In this regard, most alkali metals would lose one electron to form bonds with other substances.
  • This way, the number of protons will be greater in them and leave a positive net charge.
You might be interested in
A very light ping-pong ball moving east at a speed of 4 m/s collides with a very heavy stationary bowling ball. The Ping-Pong ba
KengaRu [80]

Answer:

They experience the same magnitude impulse

Explanation:

We have a ping-pong ball colliding with a stationary bowling ball. According to the law of conservation of momentum, we have that the total momentum before and after the collision must be conserved:

where is the initial momentum of the ping-poll ball

is the initial momentum of the bowling ball (which is zero, since the ball is stationary)

is the final momentum of the ping-poll ball

is the final momentum of the bowling ball

We can re-arrange the equation as follows or

which means (1) so the magnitude of the change in momentum of the ping-pong ball is equal to the magnitude of the change in momentum of the bowling ball.

However, we also know that the magnitude of the impulse on an object is equal to the change of momentum of the object:

(2) therefore, (1)+(2) tells us that the ping-pong ball and the bowling ball experiences the same magnitude impulse:

3 0
3 years ago
If the mass of a material is 120 grams and the volume of the material is 23 cm3, what would the density of the material be?
oee [108]
The density is 5.22 g/cm³.

Density=\frac{mass}{volume}
Density=\frac{120 g}{23 cm {3} }
Density= 5.22 g/cm³
4 0
3 years ago
What is the magnetic force value due to 3.5nanocoloumb charge moves to the
sertanlavr [38]

The force on the charge is 1.1×10⁻⁸ N.

<h3>What is force?</h3>

Force can be defined as the product of the mass of a body and its acceleration

To calculate the force on the charge, we use the formula below.

Formula:

  • F = qvBsin∅............. Equation 1

Where:

  • q = charge
  • v = velocity
  • B = magnetic field
  • ∅ = Angle.

From the question,

Given:

  • B = 25 mT = 0.025 T
  • v = 250 m/s
  • q = 3.5 nC = 3.5×10⁻⁹ C
  • ∅ = 30°

Substitute the given values into equation 1

  • F = (0.025)(250)(3.5×10⁻⁹)(sin30°)
  • F = 1.093×10⁻⁸ N
  • F ≈ 1.1×10⁻⁸ N

Hence, the force on the charge is 1.1×10⁻⁸ N.

Learn more about force here: brainly.com/question/12970081




6 0
3 years ago
A hollow cylinder with an inner radius of 4 mm and an outer radius of 25 mm conducts a 4-A current flowing parallel to the axis
ivann1987 [24]

Answer:

2.1 × 10⁻⁵ T

Explanation:

Given:

Inner radius, r = 4 mm = 0.004 m

Outer radius, R = 25 mm = 0.025 m

Current, I = 4 A

Distance of the point from the center, a = 17 mm = 0.017 m

μ₀ = 4π × 10⁻⁷ T·m/A

Now,

For the hollow cylinder magnetic field (B) is given as:

B=\frac{\mu_0 I(a^2-r^2)\textup{}}{2\pi a(R^2-r^2)\textup{}}

on substituting the respective values, we get

B=\frac{4\pi\times10^{-7}\times4(0.017^2-0.004^2)\textup{}}{2\pi\times0.017(0.025^2-0.004^2)\textup{}}

or

B = 2.1 × 10⁻⁵ T

5 0
3 years ago
Refer to the picture of the nutcrackers. The small nut is placed close to the pivot of the nutcracker and the larger nut is plac
Pachacha [2.7K]
D.
Due to the greater distance from the pivot, less force is required to crack the nut as
Moment = Force x distance.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Astronomers analyze starlight to determine a star’s (a) temperature; (b) composition; (c) motion; (d) all of the above.
    10·1 answer
  • To understand how to find the velocities of objects after a collision.
    9·1 answer
  • A circular wire loop of radius 12.1 cm carries a current of 2.16 A. It is placed so that the normal to its plane makes an angle
    9·1 answer
  • A wave with 2.0 m amplitude has a frequency of 500 Hz is travelling at a speed of 200 m/s. What is the wavelength?
    11·1 answer
  • Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 23.5 m above water wit
    12·1 answer
  • T/F all compounds are molecules but NOT all molecules are compounds.
    15·1 answer
  • Why do your legs appear shorter when standing in water
    7·1 answer
  • The moon has a mass of 7.34 . 102 kg and a radius of 1.74 . 106 meters. If you have a mass of 66 kg,
    6·1 answer
  • Suppose you were digging a well into saturated sediments. Why is the sediment’s permeability an important factor in deciding whe
    15·1 answer
  • 9. Studying earthquake waves, density experiments, and observations of meteorites are ways that we study the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!