After an incandescent lamp is turned on, the temperature of its filament rapidly increases from room temperature to its operatin
2 answers:
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Answer:
Explanation:
In this question it is assumed that expressions for speed and mass are asked
Kinetic energy
since the charge moving in a circle
So we can write
so, the expression for speed
now to obtain the expression for mass
Force F = m×a
and so solving for m we get:
plug expression for v back into KE equation
now rearranging the above equation we get
The question is incomplete, the atoms in the third period referred to in the question are shown in the image attached.
Answer:
Cl>Si>Ar
Explanation:
Electron affinity refers to the energy released when an atom accepts electron (s) to form a negative ion. It is a periodic property that shows similar trends as electro negativity.
Considering the atoms in period three given in the question; chlorine will have the most negative value of electron affinity. This owes to the fact that halogens accept electrons easily to form negative ions. Silicon in group 14 shows much less negative value of electron affinity while argon, a noble gas, does not accept electrons at all and has an electron affinity of zero KJMol-1 by standard.
