Question

Which element has greater atomic size C or Si​

Answer 1

Si has greater atomic radius than C , Because

Atomic radius is proportional to n^2/z , where n is the no. of outermost shell and z is atomic number

Answer 2

Answer:

Which element has greater atomic size C or Si

Answer : Si

reason : Carbon belongs to 2nd period so number of shells : 2

Silicon belongs to 3rd period so number of shells : 3

as we know while we move from top to bottom size increases because

Size is directly proportional to number of shells

So size of C <Si