30 points will give brainliest which one of these is not a real particle (one that has been discovered and described by science) quark boson photon tachyon

Tachyon is not a particle.

Your answer is Tachyon

A Tachyon is a hypothetical particle that always moves faster than light. Most physicists believe that this particle, or any particle, that moves faster than light cannot exist, because they aren't consistent with the known laws of physics.

Hope this helps :)

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

that's what i got you can count the number of atoms