Write the symbol for every chemical element that has atomic number greater than 11 and atomic mass less than 24.8

You would write elements in period 1, 2, 3, and period 4 but you would stop at chromium

Explanation: It would have been too long for me to write every symbol

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it