The following statements are about elements in the Periodic Table.
1 Their atoms have a full outer shell of electrons.
2 They are unstable .
3 They are found in Group
4 They are present in small quantities in the air.
Which statements are correct for the noble gases? *
A) 1, 2 and 3
B) 1, 2 and 4
C) 1,3 and 4
D) 2, 3 and 4 ​