Answer:
Compounds
Explanation:
Chemical reactions involving more than one element mostly give rise to compounds when transfer of electrons occurs.
The compounds are as a result of the combination of the individual elements and radicals.
Isotopes occur naturally while alpha (α) and beta (β) particles are as a result of nuclear reactions.
I believe it is E because Cesium has the most electrons, protons, and neutrons.
It is an element. Aluminun foil is aluminum prepared in thin leaves.
An ionic bond. covalent bonds do not conduct in a solid or a liquid state, ionic bonds conduct in a liquid state and not in a solid state.
Answer:
90yrs
Explanation:
Half life is the time taken for half of an original radioactive material to decay by half.
For the sample;
Half - life = 45yrs
Original amount = 600cpm
Start Number of atoms
0yrs 600cpm
First half life
45yrs 300cpm
Second half life
90yrs 150cpm