Answer: Option (D) is the correct answer.
Explanation:
Valence shell is the shell present on the outermost core of an atom and electrons present in the valence shell are known as valence electrons.
If an atom has completely filled valence shell then it means the atom is not reactive in nature because it is already stable.
But when an atom has less than eight electrons in its valence shell then it means to attain stability the atom will readily attract electrons towards itself.
As the given element 1 has 8 electrons in its valence shell. Hence, it is not reactive in nature but element 2 has 6 valence electrons. So, in order to attain stability element 2 will readily attract 2 electrons from a donor atom.
Thus, we can conclude that element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.
Answer:
Explanation:
Since all sodium salts and all nitrates are soluble, the insoluble product must be lead(II) bromide.
The equation for the equilibrium is
PbBr₂ ⇌ Pb²⁺ + Br⁻
I/mol·L⁻¹: 0.0140 0.0024
= [Pb²⁺][Br⁻]²
[Pb²⁺] = 0.0140 mol·L⁻¹
[Br⁻] = 0.0024 mol·L⁻¹
Well first of all the atomic mass is the number of protons + the number of neutrons this is the mass of the nucleus and meaning that the protons and neutrons make up the nucleus which is where all the mass is located. So the number of protons will be equal to the number of electrons if it is a neutral atom. So the atomic number of Lithium is 3 and this is equal to the number of protons. So if you want to find the number of neutrons you have to subtract the number of protons which in this case is 3, so you're going to subtract 3 from 6 (6-3) and this is going to leave you with 3 neutrons. So in this case there are 3 Protons, 3 Neutrons, And 3 Electrons.
This problem is asking for the intermolecular forces in ethanamine, C₂H₅NH₂. Hence, after analyzing it, we find they are both London dispersion forces and hydrogen bonding.
<h3>Intermolecular forces</h3>
In chemistry, intermolecular forces are the responsible of holding molecules together both in liquids and solids, and they depend on the type of bonds exhibited by the molecule. In this case, ethanamine:
Has C-C, C-H, C-N and N-H bonds. Now, C-C, C-H and N-H are strongly nonpolar as they have an electronegativity difference below 0.7, which means ethanamine has London dispersion forces as the weakest ones.
In addition, the presence of N-H bonds, provides this molecule with stronger intermolecular forces, hydrogen bonding, which occur in N-H and O-H bonds.
Learn more about intermolecular forces: brainly.com/question/17111432