Answer:
23892U=23490Th +42He
Explanation:
In alpha decay, the daughter nucleus is two units less than the parent in atomic number. The mass number also decreases by 4 units. The daughter is thus found two places before the parent in the periodic table.
your answer is <u>D</u><u>.</u><u> </u>physical change, because a new substance is not formed.
Answer:
Nitrogen will called as atom or molecule or ion too in the state which it exist means in which form it is present .
Decreased, this is due to the roots of the plants holding the soil together
