The first particles to evaporate from a liquid are those at the surface with the highest kinetic energy. These particles have sufficient energy to overcome the intermolecular forces of the liquid and become a gas.
The first particles to evaporate from a liquid are those at the surface of the liquid that have the highest kinetic energy. Evaporation is a process that occurs when particles at a liquid's surface have sufficient energy to break free of the liquid's intermolecular forces and become a gas, such as when water boils to steam. This is why sometimes we see a liquid seeming to 'disappear' over time, like a puddle drying up in the sun - it's the liquid evaporating.
Particles must have enough energy for the liquid to overcome the forces that are keeping them in the liquid. This energy is more likely to be found in particles at the surface, as they are not surrounded by other particles on all sides and therefore experience less resistance to their motion.
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b. neutral
c. positive
d. negative
Answer: The correct answer is Option c.
Explanation:
Ions are formed when an atom looses or gains electrons.
If an atom gains electrons, it leads to the formation of negative ions known as anions. For Example: Fluorine gains 1 electron to form ions.
If an atom looses electrons, it leads to the formation of positive ions known as cations. For Example: Sodium looses 1 electron to form ions.
Hence, the correct answer is Option c.
A ________ ion is created when an electron is removed.
a. stable
b. neutral
c. positive
d. negative
A cation or positive ion is created when an electron is removed. The answer is letter C.
When compared with the energy of an electron in the first shell of a carbon atom, the energy of an electron in the second shell of a carbon atom is .
Further explanation:
Quantum numbers:
Quantum numbers govern the size, energy, shape, and orientation of an orbital. The four quantum numbers are as follows:
1. Principal Quantum Number (n): It denotes the principle electron shell. The values of n are positive integers (1, 2, 3,…).
2. Angular Momentum Quantum Number (l): It represents the shape of an orbital. The value of l is an integer from 0 to (n-1).
3. Magnetic Quantum Number: This quantum number represents the orientation of the orbital in space. The value of lies between –l to +l. The formula to calculate the value of is as follows:
Therefore, the total number of values for a given value of l is 2l+1.
4. Electron Spin Quantum Number: It represents the direction of the electron spin. Its value can be or.
The formula to calculate the energy of an electron in an atom is as follows:
…… (1)
Here,
E is the energy of an electron.
Z is the atomic number of atom.
n is the principal quantum number.
Calculation of energy of an electron in the first shell of carbon atom.
The value of Z is 6.
The value of n is 1.
Substitute these values in equation (1) to calculate the energy of electron in the first shell.
Calculation of energy of an electron in the second shell of carbon atom.
The value of Z is 6.
The value of n is 2.
Substitute these values in equation (1) to calculate the energy of an electron in the second shell.
The negative sign in the energy of the electron in both the shells indicates that the electron is bound to the nucleus of an atom. So the energy of electron in the second shell of carbon atom is greater than its energy in the first shell of carbon atom and therefore option (2) is correct.
Learn more:
1. Which transition is associated with the greatest energy change? brainly.com/question/1594022
2. Describe the spectrum of elemental hydrogen gas: brainly.com/question/6255073
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Atomic structure
Keywords: energy of electron, n^2, Z^2, -13.6, n, Z, -122.4 eV, -489.6 eV, 6, 1, 2, first shell, second shell.
Answer:
The First-order phase transitions will occur.
Explanation:
The First-order phase transitions are those that involve a latent heat. During such a transition, a system either absorbs or releases a fixed (and typically large) amount of energy per volume while Second order phase transitions occur when a new state of reduced symmetry develops continuously from the disordered (high temperature) phase. The ordered phase has a lower symmetry than the Hamiltonian—the phenomenon of spontaneously broken symmetry.
There are six changes of phase that substances go through:
Heavy metals are located on the lower part of the periodic table, specifically in the d-block and f-block elements.
In the periodic table, heavy metalsare found in the d-block and f-block, at the bottom. Elements in the d-block, or transition metals, span groups 3 through 12 in the periodic table. Metals like iron, copper, and zinc are included in this category.
The f-block elements, which comprise the lanthanides and actinides, may be found at the very end of the periodic table and are referred to as the inner transition metals. Due to their large atomic weights and high densities, elements like uranium and plutonium are classified as heavy metals.
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