The common factors are: 1, 3, 9
The factors of 45 are 1, 45, 9 and 5.and 15 and 3
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30The factors of 135 are: 1, 3, 5, 9, 15, 27, 45, 135
54 is not a prime; its prime factors ar 2x33. The prime factors of 216 are 23x33, and all the factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, and 216.
Ar^30 | 12 Ar^31 | 13 Ar^32 | 14 Ar^33 | 15 Ar^34 | 16 Ar^35 | 17 Ar^36 | 18 Ar^37 | 19 Ar^38 | 20 Ar^39 | 21 Ar^40 | 22 Ar^41 | 23 Ar^42 | 24 Ar^43 | 25 Ar^44 | 26 Ar^45 | 27 Ar^46 | 28 Ar^47 | 29 Ar^48 | 30 Ar^49 | 31 Ar^50 | 32 Ar^51 | 33 Ar^52 | 34 Ar^53 | 35
The element with 27 protons is cobalt and its electron configuration is [Ar] 3d7 4s2.
AR 25-27 does not currently exist. Perhaps you are thinking of AR 25-2? Please provide the full name of the document you are referring to.
45 hours
There are 27.
27
27
1,2,3,4,6,9,12,18,36
45