In relation to the original atom, the atom that results from beta decay has an atomic number that is
select one:
a. 2 less
b. the same
c. 1 more
d. 1 less

The atom that results from beta decay has an atomic number 1 more than the original one.

Option c

Explanation:

Beta decay is the process of radioactive disintegration by which unstable atomic nuclei dissipate excess energy and undergo a change of unit of positive charge without changing its mass number.  

For eg: The β-decay of Hydrogen-2 which has the atomic number of 1 and mass number of 2 decays to helium-2 having an atomic number of  2 and mass number of 2.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-