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
Papessa [141]
3 years ago
7

Which of these elements has physical and chemical properties most similar to silicon (Si)?

Chemistry
2 answers:
ICE Princess25 [194]3 years ago
7 0

Answer: Option (1) and (2) are correct.

Explanation:

Elements which contain same number of valence electrons tend to show similar chemical properties. This is because having same number of valence electrons will make the atoms to react in a similar way.

For example, Silicon is a group 14 element. So, it contains only 4 valence electrons. Similarly, germanium and lead are group 14 elements and it has 4 valence electrons.

Therefore, silicon, germanium, and lead will have similar chemical properties.

Whereas phosphorous is a group 15 element, and chlorine is a group 17 element.

Thus, we can conclude that out of the given options germanium and lead elements has physical and chemical properties most similar to silicon (Si).

siniylev [52]3 years ago
6 0
In order from most to least similar:
1. Germanium
2. Lead
3. Phosphorus
4. Chlorine
The elements in the same column as the element you have are the most similar. The rows are not. For example, though chlorine and magnesium are in the same row, they have very different properties, whereas chlorine and fluorine more similar
You might be interested in
How are animal-like and plant-like protists are similar and different?​
IrinaVladis [17]

Answer:

The main way animal-like protists differ from plant-like protists is in the way they get energy. Animal-like protists are heterotrophs. They have to eat other protists or bacteria in order to get energy, much as animals have to eat plants or other animals to get their energy. Plant-like protists, on the other hand, are autotrophs. They can make their own energy from the sun or other sources just as plants can.

Explanation:

hope that helps ☺️

4 0
2 years ago
Read 2 more answers
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. How m
Shalnov [3]

Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. 13.6 × 10³ ml water contains 150 mg of Pb.

<h3>How to calculate the mass of solution ? </h3>

Given percentage of Pb present in the sample solution is 0.0011%

That means 0.0011 grams of Pb present in the 100g of solution.

So,

= \frac{0.150\ \text{g Pb} \times 100\ \text{g water}}{0.0011\ \text{g of Pb}}

= 13.6 × 10³ g water

<h3>What is Density ? </h3>

The mass per unit volume is called density. Density is represented as D or ρ.

It is expressed as:

\rho = \frac{m}{V}

where,

ρ = Density

m = mass of the object

V = Volume of object

Now put the value in above expression we get

\rho = \frac{m}{V}

1\ g/ml = \frac{13.6 \times 10^3}{V}

V = 13.6 × 10³ ml

Thus from the above conclusion we can say that Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. 13.6 × 10³ ml water contains 150 mg of Pb.

Learn more about the Density here: brainly.com/question/1354972

#SPJ4

6 0
1 year ago
Evaporating water is an example of a physical change because
Andreyy89
The answer is D. Evaporating water only breaks apart intermolecular bonds like H-bonds and dipole-dipole bonds, and does not change the chemical composition (or intramolecular bonds).
6 0
2 years ago
Read 2 more answers
The elements fluorine chlorine and Iodine are all part of the same ___on the periodic table
elena-14-01-66 [18.8K]
They are in the same group on the periodic table.

6 0
2 years ago
Read 2 more answers
What is the molarity of a solution if 1.75 moles of KOH are dissolved in 2.5 liters of water?
SashulF [63]

Answer: 0.7 M

Explanation:

molarity = (moles of solute)/(liters of solution) = 1.75/2.5 = 0.7 M

5 0
2 years ago
Other questions:
  • What does the acronym VSEPR represent?
    11·2 answers
  • 2.50 L of gas originally at 50 K is warmed to 80 K. If the pressure remains constant, which gas law needs to be used to find the
    8·1 answer
  • : 0.882 mm what’s the answer
    13·2 answers
  • What happens when the vapor pressure of a liquid is equal to the external pressure? The liquid freezes The intermolecular forces
    14·1 answer
  • What is the osmotic pressure of a 100 ml of toluene solution that contains a total of 0.005 moles of a polymer dissolved in it a
    9·1 answer
  • Three functions of the stem​
    14·2 answers
  • Would you expect Nio to dissolve in an aqueous solution of NaNO3?
    11·1 answer
  • What type of reaction does each of the following equations represent?
    11·1 answer
  • The molarity of a solution prepared by dissolving 4.11 g of NaI in enough water to prepare 312 mL of solution is
    7·1 answer
  • A scientist is using robots to perform thousands of experiments on different
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!