As you move from left to right on rows, or across periods and top to bottom, or down a group, the number of protons increases.
they increase left to right
Atomic radius decreases horizontally in periodic table. This is due to increase in nuclear charge.
The number of shells in periodic table increase down the group, i.e., vertically.
If you increase the frequency of a periodic wave, the wavelength would decrease. This is because wavelength and frequency are inversely proportional in a wave: as frequency goes up, wavelength goes down.
Increase -tac
Yes, shielding increases as you move down a group in the periodic table.
Yes depending on which scientists version of the periodic table you look at. Henry Moseleys ideas on the periodic table was the first to increase by atomic number.
it decreases
Yes.
yes
Increase
Mendeleev.