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4 years ago

Consider the third period of the periodic table. Which element has the smallest atomic radius?

1 answer:

3 0

According to periodic trends in the periodic table, the atomic radius decreases from left to right.

In period three, the element with the smallest atomic radius would be the element in the rightmost area. Protons increase as it goes to the right, which would mean they pull in electrons closer which decreases the size.

So in period 3, the element with the smallest atomic radius is Argon (Ar).

You might be interested in

Name three different avenues by which Thomas Edison received an education

klio [65]

Edison's education is most unique and relevant.

1. The first teacher he had was his mother
2. He found vital lessons and was influenced greatly by the book of R.G. Parker called School of Natural Philosophy
3. Another educating piece he had was a book entitled The Cooper Union for the Advancement of Science and Art

His style of learning was though reading books on a variety of subjects, a self-educating environment that fosters independent learning which can be useful through his life.

5 0

3 years ago

Show the molecular formula and electron structure of the simplest compound that forms with only carbon and hydrogen atoms.

zavuch27 [327]

The simplest compound of hydrocarbon is methane

The formula is CH_4
It belongs to alkane group and has single bonds.

The electron structure attached

3 0

2 years ago

How do i do this question？just number 5

larisa86 [58]

5 a)

Start by arranging the materials by the sonic speed and then their physical state:

$4600 \; \text{m} \cdot \text{s}^{-1}$ - Copper (solid)
$4500 \; \text{m} \cdot \text{s}^{-1}$ - Glass (solid)
$4000 \; \text{m} \cdot \text{s}^{-1}$ - Wood (solid)

$1500 \; \text{m} \cdot \text{s}^{-1}$ - Sea Water (liquid)
$1200 \; \text{m} \cdot \text{s}^{-1}$ - Acetone (liquid)
$1100 \; \text{m} \cdot \text{s}^{-1}$ - Alcohol (liquid)

$972 \; \text{m} \cdot \text{s}^{-1}$ - Helium (gas)
$267 \; \text{m} \cdot \text{s}^{-1}$ - Carbon dioxide (gas)

What trend do you identify from these data? Here's what I've got:

$\text{Sonic Speed}: \text{solid} > \text{liquid} > \text{gas}$

5 b)

The way microscopic particles are arranged in a substance helps distinguish between different physical states:

Particles in a solid are held tightly in place with small separation in between; it's hard for particles in a solid to move past one another; solids therefore have shapes that persists over time.
Particles in a gas are highly mobile- they keep moving AT ALL TIMES. There are large separations between individual particles and therefore gases tend to show no definite shape or volume.
The arrangement of particles in a liquid is located somewhere in between that of solids and gases. The exact configuration is dependent on the nature of the liquid- for example, molecules in maple syrup are held way closer to each other than those in distilled water are.

Sound travels as a longitudinal wave. As a sound wave passes through a medium, individual particles become excited and gain energy; as they run into others they transfer their energy to the next particle; the sound wave thus propagate across the medium. With a lower average distance between individual particles this action can proceed at a greater rate in average solids than in average liquids, and in average liquids than in average gases. Hence the trend.

3 0

3 years ago

In complete sentences, answer each question. each question is worth 6 points, for a total assignment point value of 60 points.

hichkok12 [17]

The technology that is involved with an ultrasound technologist include a diagnostic medical somographer and medical imaging technology.

<h3>Who is a ultrasound technologist?</h3>

It should be noted that an ultrasound technologist means an individual who uses specialized equipment to examine the human body.

The technology involves electromagnetic or sound waves as it used high. frequency sound waves to create images of the tissues in the body.

The basic properties of wave are wavelength, time period, frequency, speed and amplitude. The fundamental properties are reflection, refraction, diffraction, and interference.

The things needed for a ultrasound technologist include a degree in diagnostic medical sonography and a medical training in a hospital.

The advantages of this career include the fact that it offers job variety, there's job growth potential, and they earn a decent salary.

Learn more about ultrasound technologist on:

brainly.com/question/4256880

#SPJ1

6 0

2 years ago

Considering the various theories, the energy used in forming organic molecules in the primitive atmosphere could have come from

OLEGan [10]

Answer:

<h2>e. sound. </h2>

Explanation:

Such type of atmosphere in which oxygen was not present or was present in little amount is known as the primitive atmosphere and such type of atmosphere was present in the initial stage of the earth formation.
During this period, water vapor, nitrogen, hydrogen and carbon dioxide gases were present.
These gases interact with the help of energy that comes from many sources such as lightning, ultraviolet radiation, electric spark and some other.
When these inorganic molecules react in the then the formation of organic compounds takes place that becomes the basis of the organization of the life on the earth and called an organic evolution of life.

8 0

3 years ago