Answers 25-26 KCS18 Chemistry ICElectrons and the Periodic Table

Electrons and the Periodic Table Answers

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The electron configuration of nitrogen (N) is

1s22s22p3

1s22s22p4

1s22s22p5

1s22s22p6

Which is the noble-gas notation for lead (Pb)?

[Rn]6s24f145d106p2

[Rn]6s25d106p2

[Xe]6s24f145d106p2

[Xe]6s25d106p2

Which of these elements has an electron configuration of [Kr]5s2?

barium

calcium

rubidium

strontium

How many valence electrons does lithium (Li) have available for bonding?

In which block of the periodic table is uranium (U) found?

s block

d block

p block

f block

The noble-gas notation for tin (Sn) will contain the symbol

[Ar].

[Kr].

[Xe].

[Rn].

What is the number of valence electrons in cadmium (Cd)?

Which element does the electron configuration 1s22s22p2 represent?

Which statement describes the 3d, 4s, and 4p orbitals of Arsenic (As) based on its electronic configuration and position in the periodic table?

The 3d and 4s orbitals are completely filled, and the 4p orbital is partially filled.

The 3d orbital is completely filled, and the 4s and 4p orbitals are partially filled.

The 3d, 4s, and 4p orbitals are completely filled.

The 3d, 4s, and 4p orbitals are partially filled.

Which is the electronic configuration for oxygen?

1s2 2s2 2p1

1s2 2s2 2p3

1s2 2s2 2p4

1s2 2s2 2p6

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