Which of the following is a characteristic of nonmetals?
Question 1 options:
Nonmetals are not ductile.
Nonmetals are often shiny and hard.
Nonmetals often conduct electricity.
Nonmetals are often malleable.
Nonmetals are not ductile.
The characteristic of nonmetals from the given options is:
- Nonmetals are not ductile.
Lanthanides and actinides are part of which type of elements?
Question 2 options:
halogens
noble gases
inner transition metals
metals
Lanthanides and actinides are part of the inner transition metals.
To determine which of the following options is a characteristic of nonmetals, we need to understand what nonmetals are and their properties.
Nonmetals are elements that generally have low conductivity of heat and electricity, and they usually lack luster or shine. They are typically brittle and do not exhibit the properties of malleability or ductility like metals do.
Now, let's evaluate each option:
1. Nonmetals are not ductile: This statement is correct. Ductility refers to the ability of a substance to be stretched into a wire. Nonmetals are generally not ductile.
2. Nonmetals are often shiny and hard: This statement is incorrect. Nonmetals do not usually exhibit a shiny appearance, and they tend to have varying degrees of hardness, but they are generally not as hard as metals.
3. Nonmetals often conduct electricity: This statement is incorrect. Nonmetals are generally poor conductors of electricity. Unlike metals, they do not have mobile electrons that can carry an electric current.
4. Nonmetals are often malleable: This statement is incorrect. Nonmetals are generally not malleable, which means they cannot be hammered or pressed into shapes like metals.
Therefore, the correct characteristic of nonmetals from the given options is: Nonmetals are not ductile.
Sodium, potassium, and cesium belong to which group?
Question 3 options:
inner transition metals
alkali metals
alkaline earth metals
halogens
Sodium, potassium, and cesium belong to the group of alkali metals.
How is the modern periodic table arranged?
Question 4 options:
by increasing atomic number
by increase in atomic mass
by decreasing atomic number
by increasing atomic size
The modern periodic table is arranged by increasing atomic number.
To what group do oxygen, nitrogen, and sulfur belong?
Question 5 options:
alkaline earth metals
halogens
alkali metals
nonmetals
Oxygen, nitrogen, and sulfur belong to the group of nonmetals.
Which of the following shows three elements in order of decreasing conductivity?
Question 6 options:
m n comma o comma g e
g e comma o comma m n
m n comma g e comma o
o comma g e comma m n
The correct answer is: g e, o, m n
Tellurium is a metalloid. How many valence electrons does tellurium have?
Question 7 options:
3
4
5
6
Tellurium, being a member of Group 16 (or Group 6A), has 6 valence electrons.
Which of the following elements is a metalloid?
Question 8 options:
tellurium
argon
sodium
calcium
Tellurium is a metalloid.
Which of the following lists the elements in order of increasing malleability?
Question 9 options:
s e comma s n comma s b
s e comma s b comma s n
s n comma s b comma s e
S b comma s n comma s e
The correct answer is: Sb, Sn, Se.
Which of the following elements is a transuranium element?
Question 10 options:
erbium
holmium
lanthanum
californium
Californium is a transuranium element.
Which of the following groups contains mostly radioactive elements?
Question 11 options:
inner transition metals
halogens
nonmetals
metals
The group that contains mostly radioactive elements is the inner transition metals.
What type of element is chlorine?
Question 12 options:
alkaline earth metal
inner transition metal
metal
halogen
Chlorine is a halogen.
Which of the following is the most specific classification for the element uranium?
Question 13 options:
lanthanide-series element
actinide-series element
inner transition metal
transition metal
The most specific classification for the element uranium is actinide-series element.
Which of the following tend to form anions when bonding with other elements?
Question 14 options:
alkaline earth metals
alkali metals
nonmetals
noble gases
Nonmetals tend to form anions when bonding with other elements.
Which of the following is a liquid at room temperature?
Question 15 options:
bromine
chlorine
iodine
fluorine
Bromine is a liquid at room temperature.
Which of the following elements belong to the p6-block of the periodic table?
Question 16 options:
alkaline earth metals
alkali metals
noble gases
halogens
The noble gases belong to the p6-block of the periodic table.
Which of the following elements belongs to the f-block?
Question 17 options:
uranium
iron
argon
oxygen
Uranium belongs to the f-block.
How many valence electrons are found in phosphorus?
Question 18 options:
3
5
7
8
Phosphorus has 5 valence electrons.
Aluminum (Al) has three valence electrons and a total of three subshells. Without using the periodic table, in which group and period is aluminum located?
Question 19 options:
Group 3B, Period 6
Group 6A, Period 3
Group 3A, Period 3
Group 1A, Period 1
Aluminum is located in Group 3A and Period 3.
Which group has two valence electrons?
Question 20 options:
halogens
alkaline earth metals
noble gases
alkali metals