Which subatomic particle is exchanged in the combustion of carbon to form carbon dioxide (C + O2 → CO2)? A. neutron B. proton C. electron D. alpha particle

C. electron

Explanation:

This is because since the carbon atom has an atomic number of 6 and an electronic configuration of 2,4, it shares two pairs of electrons with two oxygen atoms with atomic number 8 and electronic configuration 2, 6.

The 4 electrons (two pairs of electrons) on the outermost shell of the carbon atom are shared one pair each for each oxygen atom, which enables the oxygen atom attain the stable octet configuration.

Also, the above reaction is a chemical reaction and not a nuclear reaction, so an alpha particle cannot be involved.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia