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3 years ago

Which statement describes a step in the formation of an ionic bond?

Physics

2 answers:

Norma-Jean [14]3 years ago

8 0

Answer:

A metal atom forms a cation, and a nonmetal atom forms an anion.

Explanation:

bond formation in a solid, liquid or gas is basically the attraction force between the molecules.

If the attraction force between molecules are weak then in that case the bond is weak and if the attraction force is strong then bond is also strong.

Now in case of ionic bond the two opposite ions will attract each other by strong electrostatic force.

So here the ionic bond is due to

$F = \frac{kq_1q_2}{r^2}$

so here correct answer will be

A metal atom forms a cation, and a nonmetal atom forms an anion.

Maksim231197 [3]3 years ago

3 0

All the statements above are false except B. During an ionic bond formation, a metal loses electrons to become a cation while a non-metal gains electrons to form an anion.

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3 years ago

Testable hypotheses that lead to experiments usually describe a relationship between

Harlamova29_29 [7]

a measurable variable and a subjective opinion.

Explanation:

Testable hypothesis that leads to experiments usually describes a relationship between a measurable variable and a subjective opinion.

In testing a hypotheses through experiments, we often design our work to suit the use of two variables which are the measurable variable and the subjective opinion.

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3 years ago

An old streetcar rounds a flat corner of radius 6.80 m, at 18.0 km/h. What angle with the vertical will be made by the loosely h

natka813 [3]

Answer:

$\alpha =20.564^{o}$

Explanation:

Given data

Radius R=6.80 m

Velocity v=18 km/h =5 m/s

First we need to set up for Force in vertical (y) and horizontal (x)

∑Fy=0=TCosα-W

∑Fx=ma=Fc=TSinα

Solve Vertical force equation for T,substituting mg for W

$TCos\alpha -W=0\\TCos\alpha=W\\TCos\alpha=mg\\T=(mg/Cos\alpha)$

Substitute expression for Fc and T into horizontal force and simplify it we get

$Fc=TSin\alpha\\ where\\Fc=(mv^{2}/R )\\So\\(mv^{2}/R )=(mg/Cos\alpha )Sin\alpha\\(mv^{2}/R )=mg*tan\alpha\\ tan\alpha =\frac{v^{2} }{Rg}\\ \alpha =tan^{-1}(\frac{(5m/s)^{2} }{(6.80m)(9,8m/s^{2} )} )\\ \alpha =20.564^{o}$

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3 years ago

Four forces are acting on an object one force is pulling two Newtons to the left the second force is pulling 2 Newton’s up the t

Sedaia [141]

Answer:

Explanation:

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2. If two forces act on an object in opposite directions, the net force is the difference between the two forces.

3. If two forces act on an object in the same direction, the net force is the sum of the two forces.

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3 years ago

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blagie [28]

We don't know. The only way we have to explain it is as the result of
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But if the Doppler effect is really at work in the cosmos, then the vast
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3 years ago