Admin What are the similarities between elements in the same period?
Elements in the same period have the same number of electron shells; moving across a period (so progressing from group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.
What are some common properties of group 2 elements?
These physical properties of group 2 elements are:
- low density (mass over volume)
- low melting points (except beryllium)
- low boiling points (except beryllium)
- soft and strong in their metal states.
- ductile.
- malleable.
- shiny and silvery as metals.
- dull appearance.
What do the electron configurations of group 2 have in common?
The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (Figure below). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is ns2.
What are the properties and uses of the elements in group 2 of the periodic table?
Being a metal, they are obviously good conductors of heat and electricity. The general electronic configuration of Group 2 elements is ns2. Alkali earth metals have the capability to lose the two electrons in their outer shell. Thus, they react with other elements and form ionic compounds.
What does all Group 2 elements have in common?
The property that is common to all group 2 elements is that they tend to form ionic bonds by losing electrons making these atoms positive charge. They are called cations. These elements are beryllium, magnesium, calcium, strontium, and radium.
What is period 2 on the periodic table?
The horizontal rows of the periodic table are called periods. Period 2, or the second period, refers to the second row from the top of the periodic table.
How do you find elements in the periodic table?
Part 2 of 3: Studying the Elements Recognize the element’s 1 to 2-letter symbol. It most often appears in the center of the box in a large font. Look for the full name of the element, if it’s present. This is the name of the element that you will use when writing it out. Find the atomic number. Recognize the atomic number is the number of protons in an atom.
What is the period on the periodic table of elements?
Each horizontal row of elements in the Periodic Table is known as a period. The Periodic Table consists of seven periods, from Period 1 to Period 7. Table shows the changes in the proton numbers and number of valence electrons when going across Period 2.