Explain how the lines seen in the spectroscope relate to the position of electrons in the metal atom?

What is the nature of the ca-cl bond in a molecule of calcium chloride (cacl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.16?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.