CHEMISTRY HIGH SCHOOL

According to Bohr's model of the hydrogen atom, what determines the energy of an electron?A. the radius of its orbit
B. the direction of its orbit
C. the stability of its orbit

Answers

Answer 1
Answer: Option a: the radius of its orbit.

Related Questions

What derived unit is usually used to express the density of liquids?
A sample of an unknown substance has a mass of 0.158 kg. If 2,510.0 J of heat is required to heat the substance from 32.0°C to 61.0°C, what is the specific heat of the substance?
Calculate the pH of a solution that is 0.111 M HCl. PH=?
Which of the following values best classifies a bond between 2 atoms as being ionic?A. An electronegativity difference of greater than 1.7 between the atoms B. An electronegativity difference of greater than 2.7 between the atoms C. An electronegativity difference of less than 1.7 between the atoms D. An electronegativity difference of less than 2.7 between the atoms
Which of the following is true about limiting and excess reagents?Links are reported

Carbon dioxide is one of the main gases in the mixture of gases coming out of the kiln.Give two reasons why.

Answers

because the kiln utilizes fire, fire uses oxygen and the fuel to create CO2
CO2 would be the main gas because the main components of the reactants are carbon and oxygen, which make up CO2

What is the electron configuration of an element with atomic number 20?

Answers

Answer: 1s^22s^22p^63s^23p^64s^2

Explanation: The element with atomic number 20 consists 20 electrons and  as atomic number is specific to an element, atomic number is of element calcium.

The nearest noble gas to calcium is argon with 18 electrons with configuartion 1s^22s^22p^63s^23p^6 according to afbau's rule, in which orbitals are arranged in order of increasing energies.

Thus electronic configuartion of calcium in terms of noble gas configuration is:

Ca:20:[Ar]4s^2
1s2,2s2.2p6,3s2,3p6,3d4,4s2

According to VSEPR theory, what causes water molecules to have a bent shape? A. the unusual location of the free electrons. . B. repulsive forces between specific lone pairs of electrons. . C. attraction between the fixed orbitals of the unshared pairs of oxygen electrons. . D. ionic attraction and repulsion

Answers

According to VSEPR theory, what causes water molecules to have a bent shape?

Answer: Out of all the options presented above the one that best represents what causes water molecules to have a bent shape according to VSEPR theory is answer choice B) repulsive forces between specific lone pairs of electrons. the bond angle in a water molecule is bent.

I hope it helps, Regards.

The correct answer is \boxed{{\text{option }}\left( {\text{B}} \right)} that is repulsive forces between specific lone pairs of electrons.

Further Explanation:

The total number of valence electrons of {{\text{H}}_2}{\text{O}} is calculated as,

Total valence electrons (TVE) = [(1) (Valence electrons of O) + (2) (Valence electrons of H)]

\begin{aligned}{\text{Total valence electrons}}\left( {{\text{TVE}}}\right)&=\left[{\left({\text{1}}\right)\left({\text{6}}\right)+\left({\text{2}}\right)\left({\text{1}}\right)}\right]\n&=8\n\end{aligned}

In {{\text{H}}_2}{\text{O}}, the total number of valence electrons is 8. Here, oxygen forms single bond with the hydrogen atom and therefore, 2 pair of electrons are used in the formation of two single bonds with hydrogen atom. Remaining 2 pair of electrons are used to complete the octet of oxygen atom. Therefore, {{\mathbf{H}}_{\mathbf{2}}}{\mathbf{O}}contains two bond pairs and two lone pairs (refer to the image attached).

According to the VSEPR theory, central atom oxygen has two bond pair with two lone pair, therefore, {{\text{H}}_2}{\text{O}} has an {\text{A}}{{\text{B}}_2}{{\text{E}}_2} arrangement. Therefore, these four pairs of electrons spread out as tetrahedral arrangement to minimize lone pair-lone pair and bond pair-bond pair repulsion. Since lone pairs are not considered in the shape of the molecule and therefore, the final shape of water molecule is bent-shape.

Learn more:

1. Molecular shape around the central atom in the amino acid glycine: brainly.com/question/4341225

2. Balanced chemical equation: brainly.com/question/1405182

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Covalent bonding and molecular structure

Keywords: hybridization, water, geometry, sp3, steric number, 3, p orbital, s orbital, Lewis structure, hybridization of water, central atom, carbon, hydrogen, oxygen, shape, double bond, h2o.

Give two reasons why quarrying is bad for the environment?

Answers

1) The longer the quarrying goes on the less and less recources we will have, soon leading to no more recources 

Which compound is an electrolyte? 1. H2O 2. C2H6 3. H3PO4 4. CH3OH

Answers

An electrolyte is a substance that releases ions when it is dissolved in water. Electrolytes are divided into salts, ions and bases. In this case, the electrolyte is H₃PO₄ as it releases H+ ions and PO₄⁻³ ions when it is dissolved in water.

The electrolyte is H₃PO₄, this is because it releases H⁺ ions and PO₄⁻³ ions when it is dissolved in water

What is an electrolyte?

In chemistry, an electrolyte is a substance that has the capacity of conducting electric current by dissociating into positively and negatively charged ions, which migrate to the cathode and anode of an electric circuit, respectively.

  • Electrolyte releases ions when it is dissolved in water.

From the given information;

The electrolyte is H₃PO₄, this is because it releases H⁺ ions and PO₄⁻³ ions when it is dissolved in water.

Learn more about electrolytes here:

brainly.com/question/1708976

What is the pressure of 64 grams of O2 in a 1L container at a temperature of 10°C?

Answers

So PV=nRT
P=?

We know that:
-V=1L
-R=8.314kPa•L/mol•K
-T=10°C (we need to converse °C in K so 10+273) =283K
For n, we know that we have 64g of O2 and were looking for the quantity of mole in these 64g. 1 mole of O2 is 15.999g so 64g would be 4.0mol ((64g • 1mol)/15.999g) so n=4.0

P•1L= 4.0mol • 8.314kPa•L/mol•K • 283K
P • 1L = 9411
P = 9411/1L
P = 9411kPa
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