45) Rank Ca, Se, Co from the lowest to highest ionization energy. 46) Rank Te, S, and O from the lowest to the highest electronegativity.

45) Ca < Co < Se

46) Te < S < O

Explanation:

These questions are talking about periodic trends. Here are some things to know about periodic trends:

Electronegativity

how well an element attracts an electronincreases left to right and bottom to top on the periodic tablenoble gases are not includedfluorine is most electronegative element, Francium is least

Atomic Radius

the distance between nucleiincreases from right to left and top to bottom on the periodic table the more electronegative an element is, the smaller it's atomic radiusFrancium has the largest atomic radius while fluorine has the smallest

Ionization Energy

the energy required to remove an electrondirectly proportional to electronegativity

Metallic Character

how closely an element's properties match those of a metaldirectly proportional with atomic radius

Hope this helps :)

This is what i found “nuclear fuel is material used in nuclear power stations to produce heat to power turbines. heat is created when nuclear fuel undergoes nuclear fission. most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing and sustaining nuclear fission.” i hope this you for what your looking for. can you plz mark me brainliest?