Chemistry, 04.02.2020 07:46 angelynb1497

Which event would be impossible to explain by using john dalton’s model of the atom?
an iron atom emits particles when it is struck by light.
an oxygen atom combines with two hydrogen atoms to form water.
an acid reacts with a base to form salt and water.
the atoms in sodium metal react with water

Answers: 3

Show answers

Answers

Answer from: kornut5536

$\boxed{\text{A. An iron atom emits particles when it is struck by light.}}$

Explanation:

John Dalton viewed the atom as a single particle, so it could not emit another particle when struck by light.

A, B, and C are wrong. John Dalton would have regarded these reactions as rearrangements of atoms to form different substances

Answer from: Quest

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Another question on Chemistry

Chemistry, 21.06.2019 19:20

What is the strongest intermolecular force between an nacl unit and an h2o molecule together in a solution? covalent bonding dipole-dipole force hydrogen bonding ion-dipole force

Answers: 1

Answer

Chemistry, 22.06.2019 06:30

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

Answers: 1

Answer

Chemistry, 22.06.2019 13:30

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Answers: 3

Answer

Chemistry, 22.06.2019 17:10

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

Answers: 2

Answer

You know the right answer?

Which event would be impossible to explain by using john dalton’s model of the atom?
an iron...

Questions