Answer:
Explanation:
We are supposed to find the frequency of light .
λf=c
the abow formula is the relation for frequency and wavelength.
Here c is the speed of light.
Given that
λ=
by substituting all this we get f as,
How does the maximum water level for spring tides compare with the maximum water level for neap tides?
1 answer:
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Answer : The correct option is, Neutrons.
Explanation :
The given atoms are, and
As from the periodic table, the atomic number of potassium is, 19
In ,
Atomic mass number = 37
Atomic number = 19
Atomic number = Number of electrons = Number of protons = 19
Number of neutrons = Atomic mass number - Atomic number = 37 - 19 = 18
In ,
Atomic mass number = 42
Atomic number = 19
Atomic number = Number of electrons = Number of protons = 19
Number of neutrons = Atomic mass number - Atomic number = 42 - 19 = 23
From this we conclude that the number of protons and electrons are same in given atoms but the number of neutrons are different.
Hence, an atom of potassium-37 and an atom of potassium-42 differ in the total number of Neutrons.
