Q. Where do we find elements with the most similar chemical and physical properties on the periodic table?
Families of the Periodic Table. Remember that Mendeleev arranged the periodic table so that elements with the most similar properties were placed in the same group. A group is a vertical column of the periodic table.
Q. Where can you find all of the elements arranged based on physical and chemical properties?
The Periodic Table
Q. What do elements in the same horizontal row have in common?
The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.
Q. Which elements have the most similar chemical properties?
Beside above, which three elements have the most similar chemical properties? Magnesium, strontium, and barium belong to group 2A of the periodic table. These have two valence electrons in their outermost shell. So these three elements have similar chemical properties.
Q. What are 3 elements that have similar properties?
Answer:The elements in the first column of the Periodic Table (other than hydrogen) are known as Group 1A metals, or alkali metals. When you compare the chemical properties of these elements (lithium, sodium, potassium, rubidium, cesium, and francium), what you’ll notice is that they are all remarkably similar.
Q. What are 2 elements that have similar properties?
As pictured below, notice how the elements lithium (Li), sodium (Na), and potassium (K) all look alike. They are all soft, silver metals. Since Li, Na, and K are all Group 1A metals, they all share similar chemical properties.
Q. What are similar properties?
If two elements have the same arrangement of valence electrons, the world sees them similarly, and thus they have similar properties.
Q. Which element has a similar properties to Lithium?
Metal
Q. What group has two valence electrons?
The number of valence electrons
| Periodic table group | Valence Electrons |
|---|---|
| Group 2 (II) (alkaline earth metals) | 2 |
| Groups 3-12 (transition metals) | 2* (The 4s shell is complete and cannot hold any more electrons) |
| Group 13 (III) (boron group) | 3 |
| Group 14 (IV) (carbon group) | 4 |
Q. Which group of elements has 8 valence electrons?
Noble Gases
Q. Which group has different numbers of valence electrons?
For groups 1-2 and 13-18, the valency is directly related to group number. So, elements in group one, the alkali metals, have one valence electron, those in group two have two valence, those in group thirteen have three electrons, and so on.
Q. What element has 2 valence electrons and is shiny?
ALKALINE EARTH METALS
Q. What is the only metalloid with 7 valence electrons?
The elements in this family are fluorine, chlorine, bromine, iodine, and astatine. Halogens have 7 valence electrons, which explains why they are the most active non-metals. They are never found free in nature.
Q. Which element has 4 energy levels and 7 valence electrons?
| Element | Element Number | Number of Electrons in each Level |
|---|---|---|
| Beryllium | 4 | 2 |
| Boron | 5 | 3 |
| Carbon | 6 | 4 |
| Nitrogen | 7 | 5 |
Q. What is the only metalloid with 3 valence electrons?
Boron
Q. Which period number is aluminum?
3
Q. Which element has 5 energy levels and 3 valence electrons?
arsenic
Q. Which element has a valency of 5?
Valency of First 30 Elements
| Element | Atomic Number | Valency |
|---|---|---|
| Valency of Beryllium | 4 | 2 |
| Valency of Boron | 5 | 3 |
| Valency of Carbon | 6 | 4 |
| Valency of Nitrogen | 7 | 3 |
Q. What element in the fourth period has 5 valence electrons?
The elements of group 15. The elements of the group 15 (column) VA of the periodic table all have electron configurations of s2p3, giving them five valence electrons. These elements include Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb), and Bismuth (Bi).
Q. What valence electron number do they all have in common?
Across each row, or period, of the periodic table, the number of valence electrons in groups 1–2 and 13–18 increases by one from one element to the next. Within each column, or group, of the table, all the elements have the same number of valence electrons.
Q. What element has most valence electrons?
Elements with the most valence electrons are in group 18.
Q. What does it mean if an element has 8 valence electrons?
The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.
Q. What is the octave rule?
Law of octaves, in chemistry, the generalization made by the English chemist J.A.R. Newlands in 1865 that, if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements.
Q. How many valence electrons are in a neutral atom of oxygen?
six valence electrons
Q. How many valence electrons does each oxygen atom need to be stable?
Q. How many valence electrons would an excited atom of oxygen have?
six Valence electrons
