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Elements in Group IA 1 except hydrogen are called alkaline earth metals nonmetals halogens

Elements in Group IA 1 except hydrogen are called alkaline earth metals nonmetals halogens

Elements in Group IA (1) (except hydrogen) are called:

A)alkaline earth metals.D)nonmetals.

B)alkali metals.E)halogens.

C)transition metals.

62.              Elements in Group VIIA (17) are called:

A)halogens.D)inert gases.

B)chalcogens.E)alkali metals.

C)noble gases.

63.              Elements in Group IIA (2) are called:

A)halogens.D)alkaline earth metals.

B)noble gases.E)chalcogens.

C)alkali metals.

64.              Elements in Group VIIIA (18) are called:

A)halogens.D)alkaline earth metals.

B)noble gases.E)chalcogens.

C)alkali metals.

65.              Which of the following statements applies to noble gases?

A)Noble gases exist as diatomic molecules in their elemental form.

B)Noble gases are found in Group VIIIA (18) in the periodic table.

C)Noble gases are very reactive.

D)Noble gases were discovered in ancient times.

E)Many compounds are known for each noble gas.

66.              Which of the following statements regarding ion formation is incorrect?

A)Nonmetals usually gain electrons to form ions that have a noble gas electron count.

B)Main-group metals usually lose electrons to form ions that have a noble gas electron count.

C)Elements in the same group often form ions of the same charge.

D)The charge of any element's ion can be simply predicted using the periodic table.

E)All of these statements are correct.

67.              What changes when an ion is formed from an atom?

A)Neutrons are lost or gained.

B)Protons are lost or gained.

C)The nucleus disintegrates.

D)Electrons are lost or gained.

E)Either protons or electrons are lost or gained.

68.              Which of the following is the most likely mass for an atom of bromine-81?

A)81.000 amuD)81.331 amu

B)80.875 amuE)81.500 amu

C)80.916 amu

69.              Which of the following is the most likely mass for an atom of silver-107?

A)107.000 amuD)106.500 amu

B)107.500 amuE)107.100 amu

C)106.905 amu

70.              Which of the following is the most likely mass for an atom of silver-109?

A)109.000 amuD)108.905 amu

B)108.500 amuE)109.100 amu

C)108.000 amu

abhinav behal 15-Feb-2020

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