Answer:
Cl
Explanation:
⁴¹Ca has an atomic number equal to 20, it means that it has 20 protons and 20 electrons ad its neutral state. In the decay by electron capture, it will lose one electron and will become a cation, but the mass (41) and the atomic number will remain the same.
When Ca⁺ undergoes alpha decay, it will lose an alpha particle, which has mass 4 and 2 protons.
⁴¹₂₀Ca⁺ → ³⁷₁₈X⁺ + ⁴₂α
To be stable, X will lose a proton and will become ³⁷₁₇X. The element which has atomic number 17 is chlorine, Cl.
Answer is cccccccccccccccccccccccccccccccccccccccc
It is important because if the sample size is smaller, outliers could skew the data more than if it was large.
One Ba2+ and two Br- ions will be there.
Answer is 3
Lower as KCl has ionic bonding which is less stable than CaCl2s covalent bond which requires less energy.
