Chapter 2, Problem 7PS

(a)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Magnesium atom is 12, thereby it has 12 protons; if the mass number of magnesium is 24 then the number of neutron is 12.

The number of protons and number of electrons for an atom is equal.

(b)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Tin atom is 50, thereby has 50 protons; if the mass number of tin is 119 then the number of neutron is 69.

The number of protons and number of electrons for an atom is equal.

(c)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Thorium atom is 90, thereby it has 90 protons; if the mass number of thorium is 232 then the number of neutron is 142.

The number of protons and number of electrons for an atom is equal.

(d)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Carbon atom is 6, thereby it has 6 protons; if the mass number of carbon is 13 then the number of neutron is 7.

The number of protons and number of electrons for an atom is equal.

(e)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Copper atom is 29, thereby it has 29 protons; if the mass number of copper is 63 then the number of neutron is 34.

The number of protons and number of electrons for an atom is equal.

(f)

Interpretation Introduction

Interpretation:

For the given atoms, the number of electrons, protons and neutrons has to be determined.

Concept introduction:

The atomic number of Magnesium atom is 12, thereby it has 12 protons; if the mass number of magnesium is 24 then the number of neutron is 12.

The atomic number of Tin atom is 50, thereby has 50 protons; if the mass number of tin is 119 then the number of neutron is 69.

The atomic number of Thorium atom is 90, thereby it has 90 protons; if the mass number of thorium is 232 then the number of neutron is 142.

The atomic number of Carbon atom is 6, thereby it has 6 protons; if the mass number of carbon is 13 then the number of neutron is 7.

The atomic number of Copper atom is 29, thereby it has 29 protons; if the mass number of copper is 63 then the number of neutron is 34.

The atomic number of Bismuth atom is 83, thereby it has 83 protons; if the mass number of bismuth is 205 then the number of neutron is 122.

The number of protons and number of electrons for an atom is equal.