What are the groups and families on the periodic table?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods. Group (family): A vertical column in the periodic table.
What is a group or family on the periodic table?
What is a family on the periodic table?
- Team 1: antacids steels, or lithium family.
- Team 2: alkaline planet steels, or beryllium family.
- Team 3: the scandium family.
- Team 4: the titanium family.
- Team 5: the vanadium family.
- Team 6: the chromium family.
- Team 7: the manganese family.
- Team 8: the iron family.
What is group 17 on the periodic table?
- Astatine is placed below iodine in Group 17 of the Periodic Table.
- Hence, astatine is expected to react with water, iron and sodium hydroxide solution in the similar way as iodine but these reactions are slower (less reactive) than iodine.
- For example:
How are families of elements arranged in a periodic table?
Three systems have been used to number families and groups:
- The older IUPAC system used Roman numerals together with letters to distinguish between the left (A) and right (B) side of the periodic table.
- The CAS system used letters to differentiate main group (A) and transition (B) elements.
- The modern IUPAC system uses Arabic numbers 1-18, simply numbering the columns of the periodic table from left to right.
How many families are there in the periodic table?
The Periodic table can be divided into nine families of elements each having similar properties. The families include: Alkali Metals. Group 1 of the periodic table are the alkali metals. They are highly reactive and do not occur freely in nature.
How many electrons are in Group 17?
Group 17 includes the halogens and are five non-metallic elements. They have 7 electrons in their outer shells and an oxidation number of -1.
Which group of elements have valence electrons in more than one shell?
They have valence electrons in more than one shell and exhibit several common oxidation states. Groups 13, 14, & 15 include the other metals elements. They are malleable and ductile but are not the same as transition elements.
What are the elements in Group 2?
Group 2 includes the alkaline earth elements. They are metallic elements and have an oxidation number of +2, making them very reactive. Groups 3 through 12 include 38 elements called transition metals. They are malleable and ductile and also conduct heat and electricity.
What are metalloids?
Metalloids are found between the metals and non-metals along a boundary. They have properties of both metals and non-metals. Some of the metalloids, such as silicon and germanium, are semi-conductors.
Do metals have valence electrons?
They do not exhibit a variety of oxidation states, they have valence electrons only in the outer shells. They are solid, have high density, and are opaque. Their oxidation numbers are +3, +/14, and -3. Metalloids are found between the metals and non-metals along a boundary.
