Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Basic Concepts of Chemistry
Which one of the following elements of the third period of the Periodic table has the largest size? (Atomic numbers of the elements are shown)
1
Al (Z = 13)
2
Na (Z = 11)
3
Si (Z = 14)
4
More than one of the above
5
None of the above