Aspace probe identifies a new element in a sample collected from an asteroid. successive ionization energies (in attojoules per atom) for the new element are shown below.
i1 i2 i3 i4 i5 i6 i7
0.507 1.017 4.108 5.074 6.147 7.903 8.294
to what family of the periodic table does this new element probably belong?
1(1a)
2(2a)
13(3a)
14(4a)
15(5a)
16(6a)
17(7a)
18(8a)
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