C) After reacting, each ion has a stable octet.
Explanation:
When Na reacts with chlorine gas to form the ionic compound NaCl, after the reaction, each ion has a stable octet.
- The driving force for every reaction is the tendency of the atoms to have completely filled outer energy levels like the noble gases.
- To achieve this configuration, an atom may lose or gain or share electrons.
- In this way, their shells become completely filled and they attain stability.
- In the reaction between Na and Cl, Na, a metal loses an electron. Na then will have a configuration similar to that of Ne, a noble gas.
- The electron is then gained by the chlorine atom and it mimics an argon atom.
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Answer:
Option E
Explanation:
- The path of the Pluto is not in line with the rest of the eight planets of our solar system whereas it is more inclined, i.e., inclination of to the ecliptic.
- The orbit of the pluto is more elliptical and more oval in shape than any other planet as a result of the cooling and refreezing of the gases.
Ecliptic:
It is a term used for the imaginary path of the sun annually.
It also represents the line along which the occurrence of the eclipses take place.
The energy absorbed by photon is 1.24 eV.
This is the perfect answer.
Answer:
70.4%
Explanation:
Step one:
given data
input energy= 2280J
output energy= 1,606 Joules of useful kinetic and 55joules waste
hence the useful out put= 1606J
Required
The efficiency of the motor
Step two:
what is the efficiency of a motor?
efficiency is the ratio of mechanical power delivered by the motor (output) to the electrical power supplied to the motor (input)
Efficiency= 1606/2280*100
Efficiency=0.704*100
Efficiency=70.4%