Which statement about noble gases is not correct?
☐ | A | They are diatomic | |
☐ | B | They have low densities | |
☐ | C | Their boiling points increase going down the group | |
☐ | D | They are unreactive |
Did this page help you?
Which statement about noble gases is not correct?
☐ | A | They are diatomic | |
☐ | B | They have low densities | |
☐ | C | Their boiling points increase going down the group | |
☐ | D | They are unreactive |
Did this page help you?
Which of the following statements is not a correct statement about helium?
☐ | A | It is chemically inert as it has a full outer shell of electrons | |
☐ | B | It is used in weather balloons as its density is lower than air | |
☐ | C | Its nucleus contains 2 protons and 4 neutrons | |
☐ | D | It is the lightest noble gas |
Did this page help you?
Argon has an atomic number of 18.
What is the electronic configuration for this atom?
☐ | A | 10.8 | |
☐ | B | 18 | |
☐ | C | 8.2.8 | |
☐ | D | 2.8.8 |
Did this page help you?
(1)
Figure 4
gas | reactivity | density in g cm–3 |
helium | unreactive | 0.00018 |
hydrogen | very reactive | 0.00009 |
krypton | unreactive | 0.00380 |
Figure 5
Mendeleev produced one of the earliest periodic tables.
State why he could not include any of the noble gases in his periodic table.
noble gas | boiling point in °C |
helium | –269 |
neon | –246 |
argon | –186 |
krypton | –153 |
xenon |
Figure 6
(2)
(1)
boiling point of xenon = ............................ °C
Did this page help you?
Argon has a boiling point of -186oC.
Which would be the best prediction of the boiling point of xenon?
☐ | A | -269 oC | |
☐ | B | -108 oC | |
☐ | C | 98 oC | |
☐ | D | It is not possible to make a prediction |
Did this page help you?
Which of the following lists four noble gases in order of increasing density?
☐ | A | xenon, krypton, argon, neon | |
☐ | B | hydrogen, helium, neon, argon | |
☐ | C | helium, neon, krypton, argon | |
☐ | D | helium, argon, xenon, radon |
Did this page help you?