Free Printable Electron Configuration and Valence Electrons

1.

Which area on the periodic table represents the electrons in the "d" sublevel?

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

2.

Which of the following is the electron configuration for an alkali earth metal?

a)

1s²2s¹

b)

1s²2s²2p¹

c)

1s²2s²2p⁵

d)

1s²2s²2p⁶3s²

3.

How many electrons at most are in the 4f sublevel?

a)

10

b)

8

c)

18

d)

14

4.

The following electron configuration is for which element?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

a)

Cu

b)

Zn

c)

Cd

d)

Ga

5.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s²4d¹⁰4p⁵

b)

[Kr]5s²4d¹⁰5p⁵

c)

[Xe]5s²5d¹⁰5p⁵

d)

none of the above

6.

How many valence electrons are in this element? AND identify the element.

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²5d¹4f¹⁴5d²

a)

11; Hf

b)

2; Ba

c)

3; La

d)

2; Ta

7.

What atom matches this electron configuration?
1s²2s²2p⁶3s²

a)

Neon

b)

Magnesium

c)

Aluminum

d)

Potassium

8.

What do you start electron configuration with?

a)

1s²

b)

1d¹⁰

c)

1f¹⁴

d)

1p⁶

9.

How many total electrons can the f orbitals in a sublevel hold?

a)

2

b)

14

c)

6

d)

10

10.

What is this element?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶

a)

Argon

b)

Krypton

c)

Selenium

d)

Bromide

11.

Electrons are paired based on their spin directions, clockwise and counterclockwise, is what electron configuration rule?

a)

Hund’s Rule

b)

Aufbau Principle

c)

Pauli Exclusion Principle

12.

What is this element?
[Ar]4s²

a)

Calcium

b)

Sodium

c)

Scandium

d)

Titanium

13.

Which of the following elements has the electron configuration $1s^22s^22p^63s^23p^64s^23d^104p^65s^24d^105p^5$ ?

a)

A) Bromine

b)

B) Iodine

c)

C) Antimony

d)

D) Tin

14.

How many valence electrons does an element with the electron configuration $1s^22s^22p^63s^23p^64s^23d^104p^65s^24d^105p^66s^2$ have?

a)

A) 2

b)

B) 4

c)

C) 6

d)

D) 8

15.

Which of the following is the correct electron configuration for a transition metal?

a)

A) $1s^22s^22p^63s^23p^64s^23d^5$

b)

B) $1s^22s^22p^63s^23p^64s^23d^104p^1$

c)

C) $1s^22s^22p^63s^23p^64s^23d^104p^6$

d)

D) $1s^22s^22p^63s^23p^64s^23d^104p^65s^1$

Electron Configuration and Valence Electrons

Total questions: 15

Worksheet time: 15mins

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