The query is incomplete; the full question is;
Among 118 recognized elements, how many have atoms in their ground state with core electrons that possess quantum numbers of n=3 and l=1?
a. 10
b. 6
c. 100
d. 18
Answer:
c. 100
Clarification:
Upon closer examination of the periodic table, we can observe that there are 100 elements following argon that have the electronic structure: 1s2 2s2 2p6 3s2 3p6.
This indicates that all elements beyond argon must include a 3p sublevel in their core electrons. For the 3p sublevel, n=3 and l=1.
If we accurately enumerate the elements from potassium (which comes immediately after argon) to Oganesson (element number 118), we find a total of 100 elements that have core electrons with quantum numbers of n=3 and l=1.
Answer:The pH measured 10 cm from the most acidic end is 3.42.
Explanation:
The pH at one end = 1The pH at the other end = 13
The chamber length = 13 cm
The change in pH concerning the chamber's length from the acidic end is
Thus, the pH at a distance of 10 cm from the most acidic end is 3.42.
Sr(s)+Mg²+(aq)→Sr²+(aq)+Mg(s)
Number of electrons transferred, n=2. Equilibrium constant,
K=2.69×10∧12
ΔG=-2.303RT logK
R=gas constant=8.314J/mol-k
T= temperature in K= 25°C=25+273=298K
Calculating gives us ΔG = -70922.3J. However, ΔG = -nFE
n= number of electrons transferred in the reaction =2
F= faraday = 96500C
E=cell potential is what?
∴E = ΔG.nF
=-(-70922.3)/2×96500)
=0.367V.
Response: Water molecules migrate from the dilute to the concentrated solution
Clarification:
During osmosis, when a solution is separated by a semipermeable membrane, the solvent (commonly water) moves from the less concentrated solution, regarding solute content, through the semipermeable membrane towards the solution with a higher concentration to balance the concentration levels between the two solutions.
Thus, in this scenario, water molecules flow from the 0.4M sugar solution to the 0.7M sugar solution through the semipermeable membrane.
The electronic configuration of an atom details how electrons are organized across various shells and sublevels.
There are four categories of sublevels: s, p, d, and f. Each of these sublevels contains orbitals, which are regions with a high likelihood of containing an electron, with each orbital capable of holding a maximum of 2 electrons.
As a result,
s-sublevel possesses 1 orbital, allowing for a maximum of 2 electrons.
p-sublevel has 3 orbitals, accommodating a maximum of 6 electrons.
d-sublevel encompasses 5 orbitals, permitting a maximum of 10 electrons.
f-sublevel includes 7 orbitals, with a maximum of 14 electrons.
Therefore, the ascending order of sublevels based on the maximum number of electrons they can hold is:
s < p < d < f
