Question 1

Electrons are found in the nucleus of the atom.

Accepted Answer

False

Answer

True

Question 2

In an atom, the number of protons are equal to number of neutrons.

Accepted Answer

False

Answer

True

Question 3

Isotopes differ in the number of ……..

Accepted Answer

Neutrons.

Answer

Positive charge.

Answer

Electrons.

Answer

Protons.

Question 4

Identify the element that has an atomic number equal to32.

Accepted Answer

Germanium (Ge)

Answer

Sulfur (S)

Answer

Technetium (Tc)

Answer

Sodium (Na)

Question 5

How many significant figures are in 322000?

Accepted Answer

3

Answer

4

Answer

5

Answer

6

Question 6

Read the length of the metal bar with the correct number of significant figures.

Accepted Answer

4.83

Answer

4.831

Answer

4

Answer

4.8

Question 7

What is the volume of a 11.99 g of metal with a density of 1.72 g/cm3?

Accepted Answer

6.97 cm3

Answer

0.1435 cm3

Answer

20.62 cm3

Answer

13.7 cm3

Question 8

Foran electron in orbital 4f, the quantum numberl is .

Accepted Answer

3

Answer

1

Answer

4

Answer

2

Question 9

Which one of the following set of quantum numbers is allowed?

Accepted Answer

n = 3, l = 1, ml = 1

Answer

n = 0, l = 1, ml = 1

Answer

n = 2, l = 1, ml = 2

Answer

n = 4, l = 3, ml = 4

Question 10

which one of the following orbitals cannot exist?

Accepted Answer

3f

Answer

1s

Answer

4d

Answer

2s

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