0
Group 1 elements, known as alkali metals, include lithium, sodium, potassium, rubidium, cesium, and francium. They are characterized by having a single electron in their outermost shell, which makes them highly reactive, especially with water. Group 2 elements, known as alkaline earth metals, include beryllium, magnesium, calcium, strontium, barium, and radium. These elements have two electrons in their outer shell and are also reactive, though less so than alkali metals.
What else can I help you with?
Which group is more reactive on the periodic table group 1 or 2?
Group 1 elements are more reactive than that of group 2 elements.
How many valence electrons do atoms have in groups 1 and 2?
group 1...is 1 valence. group 2...is 2 valence.
What are the combining ratios of elements in group II with elements in Group VII of the periodic table?
The combining ratio for Group II elements with Group VII elements is 1:2. For example, calcium (Group II) will combine with chlorine (Group VII) to form calcium chloride with a ratio of 1 calcium atom to 2 chlorine atoms.
The atomic charges of each group?
There's no charge within the atom of each group since there is a same number of electrons (negatively charged) and protons ( positively charged). The charge does not change unless after ionic bonding. The atomic charge changes depending on the reaction.
How Are Groups On A Periodic Table Numbered?
Groups on the periodic table are numbered from 1 to 18, with the group number corresponding to the number of valence electrons in the elements of that group. Group 1 elements have 1 valence electron, group 2 elements have 2 valence electrons, and so on. Groups 1, 2, and 13-18 are known as the main group elements.
Which group is more reactive on the periodic table group 1 or 2?
Group 1 elements are more reactive than that of group 2 elements.
Oxidation number for first 20 elements?
The oxidation numbers for the first 20 elements in the periodic table are typically as follows: Group 1 elements: +1; Group 2 elements: +2; Group 13 elements: +3; Group 14 elements: +4 or -4; Group 15 elements: -3; Group 16 elements: -2; Group 17 elements: -1; Group 18 elements: 0. Keep in mind that oxidation numbers can vary in different compounds and contexts.
What is the oxidation number for group 2 elements?
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
Elements that have a single oxidation number?
Elements that have a single oxidation number include group 1 elements (e.g. sodium, potassium) which have an oxidation number of +1, and group 2 elements (e.g. magnesium, calcium) which have an oxidation number of +2.
What elements are in the s block of the periodic table?
the elements belonging to group 1 and 2 of the periodic table are s-block elements. it includes elements in which the outermost subshell is s and that have 1 or 2 electrons in their outermost shell.
What groups of elements does the s-block contian?
Group 1 and group 2 elements are called s-block elements
How many valence electrons do atoms have in groups 1 and 2?
group 1...is 1 valence. group 2...is 2 valence.
Oxidation number of groups in periodic table?
Group 1 elements have an oxidation number of +1, group 2 elements have an oxidation number of +2, group 17 elements have an oxidation number of -1, and group 18 elements (noble gases) have zero oxidation number since they are chemically unreactive.
What are in the main group of elements?
Groups 1, 2, and 13 - 18 are the main group elements, also called the representative elements.
What are the combining ratios of elements in group II with elements in Group VII of the periodic table?
The combining ratio for Group II elements with Group VII elements is 1:2. For example, calcium (Group II) will combine with chlorine (Group VII) to form calcium chloride with a ratio of 1 calcium atom to 2 chlorine atoms.
Are groups 1 and 2 more or less reactive in periodic table?
Group 1 elements are the most reactive among metals, followed by group 2 elements.
Can group 1 and 2 elements become cations when they form ionic bonds?
Yes, group 1 and 2 elements can become cations when they form ionic bonds. Group 1 elements, such as sodium, readily lose one electron to become sodium cations with a +1 charge. Group 2 elements, such as magnesium, lose two electrons to become magnesium cations with a +2 charge in ionic compounds.
