22.2 nuclear atom

Question 1 Hydrogen is an element with one proton. It has three different isotopes. Which statement about the three Hydrogen isotopes is correct?

• A They must have different numbers of electrons orbiting their nucleus.
• B They must all have one proton in their nuclei.
• C They must all have one neutron in their nuclei.
• D They must all have one neutron in their nuclei.

Question 2

• A symbol nucleon number proton number
• B symbol proton number nucleon number
• C symbol neutron number proton number
• D nucleon number proton number neutron number

Question 3 An atom consists of electrons orbiting a nucleus. The nucleus contains protons and neutrons. For the atom to be neutral, which statement about the atom must be correct?

• A The number of electrons is equal to the number of protons.
• B The number of protons is equal to the number of neutrons.
• C The number of electrons, protons and neutrons are all different.
• D The number of electrons is equal to the number of neutrons.

Question 4 The charge on an electron is -e. Which answer below correctly describes the charge of a proton and the charge on a neutron? proton neutron

• A 0 +e
• B +e -e
• C +e 0
• D -e +e

Question 5

• A
• B
• C
• D

Question 6

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Question 7

• A 13
• B 27
• C 14
• D 40

Question 8

• A Nuclide 1 and nuclide 4.
• B Nuclide 1, nuclide 3 and nuclide 4
• C Nuclide 2 and nuclide 3
• D Nuclide 2 and nuclide 4

Question 9 Which of the following statements would not be correct for the nucleus of any atom?

• A The nucleus contains protons and neutrons.
• B The nucleus has a total charge of zero.
• C The nucleus is very small compared to the size of the atom.
• D The atom contains the same number of protons and electrons.

Question 10 A nitrogen atom loses an electron. What is it called now?

• A an atom
• B an isotope
• C a negative ion
• D a positive ion