You are right, it's CA Calcium, 40.08, Group 2 and Row 4.
C)shorter wavelength and higher energy
frequency is inversely proportional to wavelength
frequency is directly proportional to Energy
A chemical bond is <span> lasting attraction between atoms that enables the formation of </span>chemical <span>compounds. </span>
<span>The characteristics of a wave are given certain names to describe them, and this helps scientists to accurately describe any given wave. The characteristic known as frequency describes the number of waves that pass a point, and it is measured in waves per second, or Hertz, which is given the symbol Hz, but can also be described using the inverse of the SI unit for second, s^-1.</span>