1) write electron configurations for the following atoms on ions: a) Bi b) Se² c

Question

1) write electron configurations for the following atoms on ions: a) Bi b) Se² c) Pt d) Ba²

2.) One of the visible lines in the hydrogen emission spectrum corresponds to the  n=6 to n=2  electronic transition. What color light is this transition?

3)

Predict some of the properties of element  117(the symbol is Uus, following conventions proposed by the International Union of Pure and Applied Chemistry, or IUPAC).

1.   What will be its electron configuration?

2.   What element will it most resemble chemically?

3. What will be the formula of the neutral binary compounds it forms with sodium, magnesium, carbon, and oxygen?

4. What oxyanions would you expect  Uusto form?

Explanation / Answer

For Bi: Xe 4f14 5d10 6s2 6p3

our configuration for Se-2 becomes
[Ar] 3d10 4s2 4p6

For Pt : [Xe] 4f14 5d9 6s1

For Ba 2+ : [Xe]

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