The elements with atomic numbers 68, 70, 39, and 65 are, respectively, Erbium (Er), Dysprosium (Dy), Yttrium (Y), and Terbium (Tb).
The elements with the atomic numbers you specified are as follows: element 68 is Erbium (Er), element 70 is Ytterbium (Yb), element 39 is Yttrium (Y), and element 65 is Terbium (Tb). These elements belong to the lanthanide and transition metal groups in the periodic table.
39
(s + 65 + 62 + 70 + 68) / 5 = 66.2 ∴ s + 65 + 62 + 70 + 68 = 331 ∴ s = 331 - 65 - 62 - 70 - 68 ∴ s = 66
68/78 = 34/39
The average of 65 and 55 and 84 is 68
The elements named for the city of Ytterby, Sweden, are Yttrium (39), Terbium (65), Erbium (68), and Ytterbium (70). These elements were discovered in the late 18th and early 19th centuries from a mineral found near Ytterby. The city is notable for its historical significance in the field of rare earth elements.
68 + 65 = 133
0.5735
65
68
68
68
65.8
Barry Manilow is 68.
39
4420
57.35%