Now That’s Radioactive!
Francium
What is the biggest element in Group 1?
Thus, helium is the smallest element, and
francium
is the largest.
What is the only element in Group 1?
Alkali metals are the chemical elements found in Group 1 of the periodic table. The alkali metals include: lithium, sodium, potassium, rubidium, cesium, and francium.
Which Group 1 element reacts the most vigorously?
The alkali metals
(Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table – they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.
What element is in the 1st group?
alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely,
lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr)
. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).
What is Group 1 called?
The Group 1 elements are called
the alkali metals
. They are placed in the vertical column on the left-hand side of the periodic table . … Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.
Do all group 1 elements react vigorously with water?
All the alkali metals
react vigorously with cold water
. … This shows that the reactivity of the alkali metals increases as you go down Group 1.
What is Group 2 called?
Group 2A (or IIA) of the periodic table are the
alkaline earth metals
: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). … In most cases, the alkaline earth metals are ionized to form a 2+ charge.
Are Group 1 metals reactive?
Group 1 of the periodic table includes hydrogen and the alkali metals. Because they have just one valence electron, group 1 elements
are very reactive
.
How does Group 1 react with oxygen?
The group 1 elements react with oxygen from the air
to make metal oxides
. … This forms a white oxide, which covers the surface. The metal below the surface does not react. The alkali metals burn vigorously when heated and placed in a gas jar of oxygen.
Which element in group 1 reacts most vigorously with water?
Sodium
is the alkali element that reacts most violently with water.
Which metal is stored in oil?
Metallic sodium
is usually stored in mineral oil or some other hydrocarbon, because it will react with the moisture in the air to form sodium hydroxide.
What atom has 3 protons and reacts with cold water?
Lithium is a chemical element with the mass number 3. It is the lightest metallic element on earth. In chemical reactions, lithium tends to give up a single electron to attain an electronic configuration similar to the noble gas helium.
How do you learn the elements in Group 1?
Group 1 is known as alkali metals. It includes Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Ru), Caesium (Cs), and Francium (Fr). Mnemonic for Group 1:
LiNa Ki Ruby Cse Friendship hai
.
Why are Group 2 called alkaline earth metals?
Beryllium, magnesium, calcium, strontium, barium and radium are the elements in Group 2. For two reasons, these elements are referred to as Alkaline Earth metals,
Their oxides remain in the crust of the earth and are very heat-stable
. … The elements of Group 2 of the periodic table are alkaline earth metals.
What are Group 17 elements called?
Halogen
, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).
