Elements in the same vertical column share similar chemical properties. Which statement best explains this?a. They have the same number of neutrons in their nucleus.
b. They have similar physical qualities.
c. They have identical numbers of electrons in the outermost level.
d. They were discovered in the same location.

Answers

Answer 1

Answer: they have identical numbers of electrons in the outermost level

Answer 2

Answer: Answer:C

Explanation:Most vertical columns share similiar chemical properties because they have identical numbers of electrons in the outermost level.

Hope this helped:)

Related Questions

18. Which of the following reactions are endothermic or exothermic? Explain your answers. A. When a certain amount of potassium nitrate is dissolved in water, the water temperature drops from 23°C to 18°C. B. Jack cooks himself a steak. C. When cold water is mixed with sulphuric acid, the mixture can rapidly reach the boiling point of water. D. A flare burns up slowly.
the radioisotope radon-222 has a half-life of 3.8 days. How much of a 73.9-gram sample of radon-222 would be left after approximately 23 days?
Please help! Multiple choice question! Which of the following gradients allow oxygen to leave the blood and enter body tissues and carbon dioxide to leave body tissues and enter the blood? A. High concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissues B. Low concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissues C. High concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissues D. Low concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissues
What is the theoretical yield of aluminum that can be produced by the reaction of 60.0 g of aluminum oxide with 30.0 g of carbon according to the following chemical equation? Al2O3 + 3C → 2Al + 3CO
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Large cities often have a visible haze hanging in the air high above them. What most likely causes this haze? a. many women's aerosol hairsprays

Answers

Haze is caused by particulate matter from incomplete combustion of car, truck, bus, burning of gasoline and diesel. This could also be caused by the buning of wood, coal, and heating oils from industry, electical generation plants that do not collect some of the pollutants at the smoke stack or exhaust points.

In a redox reaction, which particles are lost and gained in equal numbers?(1) electrons (3) hydroxide ions(2) neutrons (4) hydronium ions

Answers

Answer: Option (1) is the correct answer.

Explanation:

A redox reaction is a reaction in which both oxidation and reduction takes place.

For example, $H_(2) + F_(2) \rightarrow 2HF$

Oxidation-half reaction : $H_(2) \rightarrow 2H^(+) + 2e^(-)$

Reduction-half reaction : $F_(2) + 2e^(-) \rightarrow 2F^(-)$

Hence, we can see that electrons are involved in a redox reaction.

Therefore, we can conclude that in a redox reaction, electrons are the particles which are lost and gained in equal numbers.

In redox reactions the particles that are lost and gained are ELECTRONS. (option 1)

What type of reaction is shown below? CH4 + 2O2?CO2 + 2H2O + heat

Answers

This is a "Exothermic Reaction."

I did the same test and this was the correct answer.

I hope this helps!

student has calibrated his/her calorimeter and finds the heat capacity to be 14.2 J/°C. S/he then determines the molar heat capacity of aluminum. The data are: 25.5 g Al at 100.0°C are put into the calorimeter, which contains 99.0 g H2O at 18.6°C. The final temperature comes to 22.7°C. Calculate the heat capacity of Al in J/mol·°C.

Answers

Answer:

24.03 J/mol.ºC

Explanation:

For a calorimeter, the heat lost must be equal to the heat gained from water plus the heat gained from calorimeter, which has the same initial temperature as the water.

-Qal = Qw + Qc (minus signal represents that the heat is lost)

-mal*Cal*ΔTal = mw*Cw*ΔTw + Cc*ΔTc

Where m is the mass, C is the specific heat, ΔT is the temperature variation, al is from aluminum. w from water and c from the calorimeter. Cw = 4.186 J/gºC

-25.5*Cal*(22.7 - 100) = 99.0*4.186*(22.7 - 18.6) + 14.2*(22.7 - 18.6)

1971.15Cal = 1699.10 + 58.22

1971.15Cal = 1757.32

Cal = 0.89 J/g.ºC

The molar mass of Al is 27 g/mol

Cal = 0.89 J/g.ºC * 27 g/mol

Cal = 24.03 J/mol.ºC

Scientific Notation expresses a value as the product of a number between 1 and 10 and

Answers

... and a power ot ten.

For example: 1,3x10^21 is in scientific notation, but 13x10^20 is not in scientific notation.

What other forms of radiation may come from the stars?

Answers

Other forms of radiation may come from the stars. These radiations include x-ray radiation, ultraviolet radiation, electromagnetic radiation, infrared radiation, alpha ray, beta ray & gamma ray, visible light radiation, radio frequencies radiation and magnet waves.

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