Question

10 the radius of the outline of spherical lens.
Among the elements ,He4 _N14 M 924 and Be, the elements
which belong to the same period in the modern periodic table are
(A) 2He" and Be8
(B) 114 and Be8
( 12 Mg 24 and He
(D) Be® and 12Mg24​

Answer 1

Answer:

I know that but you can try it you can solve this problem you can do it please