Answer:
C. ns² np^5
Explanation:
An electron gets more electro-negative as it increases in number of electrons until it shell gets filled up. At the point when its shell is filled up, the electron becomes neutral; i.e. not positive and not negative.
Only ns² np^5 satisfies this condition; reason being that it has higher electrons
Be(g) + e + 241 kJ ==> Be^-(g) EA = +231 kJ/mol. (endothermic)
Considering the example above
Also, electron affinity is referred to as the amount of energy absorbed when there's an additional electron to an isolated gaseous atom which forms an ion with a 1- charge by assigning a positive value when energy is absorbed and a negative value when energy is released
Explanation:
A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression as :
.............(!)
Where
m = 7 kg
We need to find the value of a from equation (1). On solving we get :
Hence, this is the required solution.
Answer:
snowshoes have a large surface area.
Explanation:
this distributes the weight of the person wearing them over a larger surface area, meaning that less downward pressure is applied to the snow which prevents the person sinking into the snow. This allows for easier travel in snow conditions :)
hope this helps!!
Explanation:
4.
Given: Δd = 4 + 2 + 1 = 7km, Δt = 32 + 22 + 16 = 70mins
Required: V
Equation: V = Δd/Δt
Solution: V = 7/70
= 0.1km/min
Answer:
Option A) n
Explanation:
In accordance to Quantum Mechanical model of an atom:
- The Principle Quantum number (n) gives the description of the shell of an electron and the energy level of an electron in an atom.
- The angular momentum also referred to as Azimuthal Quantum number (l) gives the description of the shape of the orbitals and helps in determination of angular momentum magnitude.
- The magnetic quantum number () describes the energy levels or the number of orbitals contained in a subshell and the way these are oriented within.
- The spin quantum no. () determines the elelctron spin's direction which may be () or ().