0
number of electrons in valence (last) shell
Elinor Murray
Add your answer:
Earn +20 pts
What gives elements their properties?
heat, heat can change the state of matter therefore speeding up molecules.
Why is the periodic table important to scientists?
This is similar to my answer for 'Why is the periodic table important to chemists?'The way that elements are arranged on the Periodic Table gives you some idea of the properties of the elements and how they relate to other elements. Elements in the same group (column) will exhibit some similar chemical and electrical properties, because their outer electron configurations are the same, for example.
What can you predict about an element from its position on the periodic table?
Its position predicts several useful characteristics: 1. The no. of valence electrons/the type of valence orbitals 2. The nature of element 3. Other Elements having similar chemistry 4. rough idea of the ionization enthalpy, electronegativity, and other parameters and many more things
What gives water many properties that are important to living thing?
hydrogen bonds
Which measurement temperaturevolume or density gives you the most information about an objects identity?
density will give you the most info because it tells mass per volume, which for elements is nearly unique, whereas temperature and volume are both extrinsic - meaning they have nothing to do with the properties of the material.
How can one show that elements that have different appearances have similar chemical properties?
You can experiement with the melting point, boiling point, and freezing point of the elements to prove they have similar properties. This and you can check the different physical and other chemical properties for similarities and comparison.
What do elements in the same group or family share?
Elements in the same family are related because of shared properties. For example, all the elements in the noble gas family do not react to anything and are colorless, nonflammable, odorless, and tasteless under normal circumstances.
Why are groups on the periodic table called families?
The elements is a group on the Periodic Table are considered a family because they have similar electron configurations and similar properties.
What do elements in the same group have?
They have the same number of valence electrons which, in general, gives them similar oxidation numbers and other similar chemical and physical properties. The similarities are most pronounced in the groups at either side of the standard periodic table, and are least pronounced for the transition and rare earth elements.
Why the elements magnesium and calcium have simial properties?
As they are both in Group II of the periodic table, they both have 2 outer shell electrons. It is these electrons that react, so having the same number gives these two elements similar properties. Also, they are next to each other, so their sizes are very similar. This helps them to exchange with each other within minerals, such as dolomite.
Why are the isotope of the element similar?
As I understand it, since they have the same number of protons, they tend to attract the same number of electrons. All neutral atoms of the same elements will have the same number of electrons. This gives them similar chemical properties, since the chemical properties are, to a great extent, determined by the outermost electrons.
What do elements within a group have a similar number of?
Chemical elements that are in the same group within the periodic table have the same numbers of electrons in the outermost shell. This gives them similar reactivity.
What gives elements their properties?
heat, heat can change the state of matter therefore speeding up molecules.
When elements combine to from a mixture the resulting chemical properties may be very different from those of the elements that make it?
Yes. For example, combining gases oxygen and hydrogen gives you water. Combining sodium and chlorine (both dangerous and toxic elements) gives you common salt.
What is in alloy?
An Alloy is two metals mixed together.it is the combination of one or more elements, usually metals. the mixture of elements in an alloy gives it new properties that are different from the properties of the individual element. it often eliminates disadvantages of the pure metal .
How are the electron clouds of the atoms of the elements in a group the same?
Atoms of the elements in a group have the same number of electrons in their outer energy shells. This gives the elements similar Chemical Propetries.
What is alloy in chemistry?
An Alloy is two metals mixed together.it is the combination of one or more elements, usually metals. the mixture of elements in an alloy gives it new properties that are different from the properties of the individual element. it often eliminates disadvantages of the pure metal .
