For strontium chloride, the light released when electrons transition between energy levels has a wavelength of 630 nm. Calculate:the wavelength in meters
the frequency in Hertz
the Energy in Joules

The elements that have the most similar chemical properties are .

Further Explanation:

Periodic table:

Elements are arranged in increasing order of their atomic numbers in various rows and columns. Such tabular arrangement is called a periodic table. The elements with the same chemical and physical properties lie in the same group. Horizontal rows are called periods and vertical columns are called groups. There are 18 groups and 7 periods in a periodic table.

Elements are also classified as metals, non-metals, and metalloids in this table. The elements placed at the left side of the table are metals while those placed at the right of the table are non-metals. Metalloids are elements that are placed between metals and non-metals.

Magnesium, strontium, and barium belong to group 2A of the periodic table. These have two valence electrons in their outermost shell. So these three elements have similar chemical properties. But the other given elements do not lie in same group so they have different chemical properties.

Therefore option B is the correct answer.

Learn more:

1. Which ion was formed by providing the second ionization energy? brainly.com/question/1398705
2. Write a chemical equation representing the first ionization energy for lithium: brainly.com/question/5880605

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: magnesium, strontium, barium, Mg, Ba, Sr, periodic table, elements, group, period, chemical properties, similar.

Chemical properties are characteristics of a substance that describe how it interacts or reacts with other substances, leading to changes in its composition or structure. The correct answer is C. N₂, O₂, and F₂.

These properties help define the chemical behavior of a substance and are determined by its chemical composition and atomic/molecular structure.

N₂ (nitrogen gas), O₂ (oxygen gas), and F₂ (fluorine gas) belong to the same group/family on the periodic table, known as group 16 or the oxygen family. Elements within the same group tend to have similar chemical properties because they have the same number of valence electrons, which are the electrons involved in chemical bonding.

In the case of N₂, O₂, and F₂, they all have six valence electrons. This similarity in electron configuration leads to comparable chemical behavior, including their tendency to form covalent bonds, their reactivity, and their ability to gain electrons to achieve a stable octet.

Therefore, the correct answer is C. N₂, O₂, and F₂.

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The answer is electrolyte.

That is electrolyte is the type of minerals that is associated with maintaining water balance, osmotic equilibrium, acid-base balance and intracellular/extracellular differential.

Sodium, potassium and chlorides are the macrominerals that are known as the electrolytes, that are very important for the function says  maintaining water balance, osmotic equilibrium, acid-base balance and intracellular/extracellular differential .

Answer: The temperature at the point of intercept is -273°C.

Explanation: Intercept is a point on a graph which crosses the x and y axes.

Here, The X-axis represents Temperature in °C and Y-axis represents the Volume in mL.

On X-axis, the major division is 100 and minor division is 10. The slope intercepts the X-axis at third minor division from the origin. Hence, the temperature of intercept corresponds to -273°C.

Answer:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health. Humans need calcium to build and maintain strong bones, and 99% of the body’s calcium is in the bones and teeth.

Answer: Helps form bones and shells

Explanation:

Answer: Potential Energy

Explanation:

The term that best describes the stored energy based on the position or chemical composition of an object is its potential energy. It is the energy possessed by a body due to its virtue of its position. Any body at rest possesses this energy because they are in one position (not moving).

An object thrown up possesses potential energy at its maximum height before falling under gravity because the object is at rest at the maximum height.

concentration of O₂ dissolved in H₂O can be written as ppm

ppm stands for parts per million - mg/kg

the amount of mg in 1 kg of solution

the mass of O₂ - 0.008 g

1000 mg equivalent to 1 g

therefore mass of O₂ in mg - 0.008 g x 1000 mg/g = 8 mg

the mass of water is 1000 g

1000 g is equivalent to 1 kg

mass of water in kg - 1000 g / 1000 g/kg = 1 kg

there's 8 mg of O₂ in 1 kg of water

therefore concentration of O₂ is - 8 mg/kg

also can be written as 8 ppm

answer is 8 ppm

Answer : The concentration of in parts per million is, 8 ppm

Solution : Given,

Mass of oxygen gas (solute) = 0.008 g

Mass of water (solvent) = 1000 g

First we have to calculate the mass of solution.

Mass of solution = Mass of solute + Mass of solvent = 0.008 + 1000 = 1000.008 g

Now we have to calculate the concentration of in parts per million.

ppm : It is defined as the mass of solute present in one million parts by mass of the solution.

Now put all the given values in this expression, we get

Therefore, the concentration of in parts per million is, 8 ppm