Free Printable DP-1 Atomic Structure

1.

All isotopes of Tin have the same:

I Number of Protons

II Number of neutrons

III mass number

a)

I Only

b)

II Only

c)

III Only

d)

I and III Only

2.

Spectra have been used to study the arrangements of electrons in atoms.

An emission spectrum consists of a series of bright lines that converge at high frequencies.

Such emission spectra provide evidence that electrons are moving from:

a)

A. Lower to higher energy levels with the higher energy levels being closer together.

b)

B. Lower to higher energy levels with the lower energy levels being closer together.

c)

C. Higher to lower energy levels with the higher energy levels being closer together.

d)

C. Higher to lower energy levels with the lower energy levels being closer together.

3.

An element has electronic configuration

2,6

How many unpaired electrons would be present in an atom of this element?

a)

A. 2

b)

B. 4

c)

C. 6

d)

D. 8

4.

Which of the following particles contain more electrons than neutrons?

a)

A. I only

b)

B. I and II only

c)

C. II and III only

d)

D. I , II and III

5.

What information about the structure of a hydrogen atom can be gained from its emission spectrum?

a)

A. Most of the mass of the atom is in its nucleus.

b)

B. A hydrogen atom contains one proton and one electron.

c)

C. The electron in the hydrogen atom is held near the nucleus.

d)

D. The electron may exist in any of several energy levels.

6.

An element has the electron configuration 2, 8, 6.

What is the element?

a)

A. O

b)

B. Si

c)

C. S

d)

D. Ne

7.

The correct number of protons and the electron configuration for chlorine is

a)

A. 17 & 2, 8, 7

b)

B. 17 & 2, 8, 8

c)

C. 18 & 2, 8, 7

d)

D. 18 & 2, 8, 8

8.

The relative masses and charges of protons, neutrons and electrons are:

mass charge

proton 1 +1

neutron 1 0

electron negligible −1

Using these data, what are the values for the mass and charge of the helium nucleus?

a)

mass charge

A. 2 +2

b)

mass charge

B. 2 0

c)

mass charge

C. 4 +2

d)

mass charge

D. 4 0

9.

Which species have electronic configurations 2.8.8, 2.8 and 2.8.1 respectively?

a)

A. Ne, F, Na

b)

B. $K^{+1},\ F^{-1}\ ,\ Mg^{2+}$

c)

C. $Ca^{2+},\ F,\ Na^+$

d)

D. $Cl^-,\ F^-,\ Na$

10.

Elements in the same group of the Periodic Table have the same

a)

A. number of protons.

b)

B. ionisation energy.

c)

C. reactivity.

d)

D. number of outer electrons.

DP-1 Atomic Structure

Total questions: 10

Worksheet time: 15mins

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