As the elements in period 3 are considered in order of increasing atomic number, there is a general decrease in
atomic mass
atomic radius
electronegativity
first ionization energy

Classify this reaction: 2al+n2-> aln.

Chemistry worksheet - i am not sure what they are asking for exactly?

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?