The correct answer is "C". 'Proton'. The number of protons is equal to the atomic numbers.
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Speed = wavelength * frequency
Speed = 250 * 6
The speed is 1,500 m/s
Sixty-five percent of the mass of bone<span> is an </span>organic<span> compound called hydroxyapatite. All </span>bones<span> formed by intramembranous ossification are irregular</span>bones<span>.
TRUE</span>