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1. Which isoelectronic series is correctly arranged in order of increasing radiu

ID: 801020 • Letter: 1

Question

1. Which isoelectronic  series is correctly arranged in order of increasing radius?

A) K < Ge < Br < Ca

B) Ge < Br < K < Ca

C) K < Ca < Br < Ge

D) Ca < Br < Ge < K

E) Br < Ge < Ca < K


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2. Which one of the following is an isoelectornic series?


A) Ca3+, K, Ar2+, S-2

B) Ca2+, K1+, Ar, S2-

C) Ca, K+, Ar, S1-

D) Ca, K, Ar, S

E) Ca2+, K, Ar, S


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4. In the molecule BrF3 the bromine uses which thpe of Hybird?

A) Sp3d

B) sp3

C) Sp3d2

D) sp2

E) sp


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Explanation / Answer

1. Which isoelectronic series is correctly arranged in order of increasing radius?

A) K < Ge < Br < Ca

B) Ge < Br < K < Ca

C) K < Ca < Br < Ge

D) Ca < Br < Ge < K

E) Br < Ge < Ca < K


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2. Which one of the following is an isoelectornic series?


A) Ca3+, K, Ar2+, S-2

B) Ca2+, K1+, Ar, S2-

C) Ca, K+, Ar, S1-

D) Ca, K, Ar, S

E) Ca2+, K, Ar, S


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4. In the molecule BrF3 the bromine uses which thpe of Hybird?

A) Sp3d

B) sp3

C) Sp3d2

D) sp2

E) sp