3. Consider the ionization energies of elements X and Y shown below in kJmol X and Y are in the same period of the periodic table and are adjacent to one another in the table
2
30
4
5
6
7
8
9
1
x 1680
Y 2080
3375
6050
8409
17868
92038
106440
11022
12180
15165
15239
3950
6122
9370
20000
23068
115375
(a) In which group would one find element X? Explain. (2)

i believe the answer is three water molecules

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally