Which elements in the periodic table are metalloids or have semimetallic properties

Answers

Answer 1

Answer: Hi There! :)

Which elements in the periodic table are metalloids or have semimetallic properties?

Boron, Silicon, Germanium, Arsenic, Antimony, and Polonium are all metalloids. Some people consider Astatine a metalloid

Related Questions

10 divided by 2 im confused
Describe the motion of a ball being thrown straight up in the air in terms of kinetic and potential energy. as the ball rises up and falls back down, how is its kinectic and potential energy affected?
Liquid octane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. If 1.75g of water is produced from the reaction of 4.6g of octane and 4.8g of oxygen gas, calculate the percent yield of water... ___%?
Which statement is true? A molecule having a covalent bond can be ionic. A molecule having a covalent bond is always polar. A molecule having a covalent bond may be polar or nonpolar. A molecule having a covalent bond is always nonpolar.
What do elements and compounds have in common? And how do they differ?I will mark brainliest for the best answer.WARNING: DON'T PUT LINKS I WILL REPORT YOU!

What’s is CO written?

Answers

Answer:

CO is a chemical formula that contains one carbon atom (C) and one atom of oxygen (O). Altogether, CO translates to "carbon monoxide."

Explanation: Why monoxide and not dioxide? Well, the prefix mono means "one," and di means "two." Since there is only one oxygen atom (-oxide), then it must be monoxide! Voila!!

Identify each of the following as either a physical change or a chemical change. Explain your answers.A. a piece of wood is sawed in half.
B. milk turns sour.
C. melted butter solidifies in the refrigerator.

Answers

A. physical
B. Chemical
C.Physical

Answer:

A would be Physical

B would be Chemical

and C would be Physical

Explanation:

A would be physical because the wood is physically changing

B would be chemical because it's still milk but it now had clumps called curds and a very sour taste

C would be physical because the melted butter is physically changing from melted butter to solid butter.

Hope this helps.

Which formula represents a nonpolar molecule containing polar covalent bonds?(1) H2O (3) NH3
(2) CCl4 (4) H2

Answers

H2O and NH3 are polar molecules. H2 is a nonpolar molecule but the H-H bond is also nonpolar.
Therefore, the best choice is CCl4. Although the C-Cl bond is polar due to electronegativity differences, the molecule itself is nonpolar because the net dipole moments cancel out, given its tetrahedral molecular structure.

$\boxed{\left( 2 \right){\text{ CC}}{{\text{l}}_4}}$ represents a nonpolar molecule containing polar covalent bonds.

Further Explanation:

The chemical bond is the attraction between atoms, molecules or ions that is responsible for the formation of chemical compounds. It is formed either due to electrostatic forces or by the sharing of electrons.

sss

A covalent bond is a bond formed by the mutual sharing of electrons between the bonded atoms. It is also known as a molecular bond. Such bonds usually exist between two or more non-metals.

Types of covalent bonds:

1. Polar covalent bond

This bond results from the presence of electronegativity difference between the bonded atoms. For example, the bond between hydrogen and chlorine in HCl is a polar covalent bond. In this molecule, Cl is more electronegative than H.

2. Non-polar covalent bond

When there is no or very small electronegativity difference between the bonded atoms, non-polar covalent bond is formed. Here, the net dipole moment of the molecule comes out to be zero. For example, bond between carbon and hydrogen in ${\text{C}}{{\text{H}}_{\text{4}}}$ is a non-polar covalent bond.

3. Coordinate covalent bond

When both the shared electrons are provided by the same atom, coordinate covalent bond is formed. This usually exists when metals are bonded with ligands. For example, the bond formed between cobalt and ammonia in case of hexamminecobalt (III) chloride is a coordinate covalent bond.

(1) ${{\text{H}}_{\text{2}}}{\text{O}}$

Oxygen is more electronegative than carbon so the bond between O and H is polar covalent bond. But this molecule has some net dipole moment due to its asymmetry so water molecule is a polar molecule. Therefore this option is incorrect. (For structure, refer to the attached image).

(2) ${\text{CC}}{{\text{l}}_{\text{4}}}$

Chlorine is more electronegative than carbon so the bond between C and Cl is a polar bond. But the net dipole moment of this molecule comes out to be zero. So ${\text{CC}}{{\text{l}}_{\text{4}}}$ is a nonpolar molecule with polar covalent bonds and therefore this option is correct. (For structure, refer to the attached image).

(3) ${\text{N}}{{\text{H}}_{\text{3}}}$

Nitrogen is more electronegative than hydrogen so the bond between N and H is polar covalent bond. But this molecule has some net dipole moment due to its asymmetry so ammonia molecule is a polar molecule. Therefore this option is incorrect. (For structure, refer to the attached image).

(4) ${\text{N}}{{\text{H}}_{\text{3}}}$

It contains two hydrogen atoms in it. There is no electronegativity difference between both atoms and therefore this molecule is nonpolar in nature. Moreover the bond between two hydrogen atoms is also non-polar. Therefore this option is incorrect. (For structure, refer to the attached image).

Learn more:

Identification of ionic bonding: brainly.com/question/1603987
What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: polar, nonpolar, correct, incorrect, H2, CCl4, H2O, NH3, electronegativity difference, hydrogen atoms, asymmetry, dipole moment.

How do you find the volume occupied by 454 grams of copper if the density equals 8.92 g/mL?

Answers

V=M/P
M=454g
p=8.92
v=50.896860986
3 significant figures
v= 50.9

Final answer:

The volume occupied by 454 grams of copper, given a density of 8.92g/mL, can be calculated using the formula for density (Density = Mass / Volume). When rearranged to find volume (Volume = Mass / Density) and substituting the given values, the volume occupied is approximately 50.9 mL.

Explanation:

When calculating volume in chemistry, we use the formula for density, which is: Density = Mass / Volume. In this case, the given values are mass (454g) and density (8.92g/mL). If we rearrange the formula to solve the volume, we get: Volume = Mass / Density. So, if we substitute the given values into the equation, we obtain: Volume = 454g / 8.92g/mL. In performing the operation, we get approximately 50.9 mL. Hence 454 grams of copper occupy 50.9 mL of volume.

Learn more about Calculating Volume here:

brainly.com/question/32488277

#SPJ2

How many moles of tungsten atoms are in 4.8 × 1023 atoms of tungsten?

Answers

Answer:- 0.80 moles

Solution:- Number of atoms of tungsten are given and we are asked to calculate the moles of tungsten atoms. So, it is a atom to mole conversion and for this we use the Avogadro number.

Number of atoms are divided by Avogadro number to get the number of moles.

Avogadro number is $6.022*10^2^3$ . Given number of atoms is $4.8*10^2^3$ . let's divide it by Avogadro number.

$4.8*10^2^3atoms((1mol)/(6.022*10^2^3atoms))$

Numerator and denominator has equal exponent so it is canceled. So, we only need to divide 4.8 by 6.022 and round the answer to two sig figs as given number of atoms has only two sig figs.

$4.8((1mol)/(6.022))$

= 0.80 moles

Hence, there are 0.80 moles of tungsten atoms in given number of atoms.

Choose from the following descriptions of solid:HCl(s)
(A) composed of macromolecules held together by strong bonds
(B) composed of atoms held together by delocalized electrons
(C) composed of positive and negative ions held together by electrostatic attractions
(D) composed of molecules held together by intermolecular dipole–dipole interactions
(E) composed of molecules held together by intermolecular London forces

Answers

The solid HCl is composed of molecules held together by intermolecular dipole–dipole interactions. The significant electronegativity difference between H and Cl make the dipole -dipole force in between HCl molecules.

What is dipole - dipole force ?

Dipole -dipole forces arises between molecules of permanent dipole moment. Covalent compounds are formed between two non-metals through electron sharing .

When one atoms is highly electronegative compared to the other, the shared pair of electrons attracts more to the electronegative atom. Which make partial charge separation and the compound becomes polar.

Two polar molecules attracts each other through dipole -dipole forces. HCl is a polar compound. Thus, in HCl solid, HCl molecules are held together by dipole -dipole forces.

Find more on dipole -dipole forces:

brainly.com/question/3461108

#SPJ6

pretty sure it's C!

Other Questions

Which of the following is not produced by nuclear decay?A) Alpha particles B) Beta particles C) Gamma rays D) Delta particles

What is the equivalent of 0 Kelvin on the Celsius scale?

In a redox reaction, which particles are lost and gained in equal numbers

Which nuclear decay emission has the weakest penetrating power?1. alpha particle 2. bera particle 3.gamma radiation 4. positron