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What change occurs in valence shells of elements as you move from left to right in any given row of the periodic table?
Wiki User
∙ 12y ago
From left to right on the Periodic Table, the elements in each group (column) have one more electron in their outer shell. For example, sodium (located on the far left side of the periodic table) has only one valence electron. Helium (located on the far right side of the periodic table) has 8 valence electrons. If the periodic table you're labels the 'A' and 'B' groups, then seeing the pattern is fairly easy. When you ignore the 'B' groups (transition metals), a very easy rule applies: whatever group (column) an element is in, that's the number of electrons in the outer shell. Elements in Group IA (like sodium) have one valence electron. Elements in Group IIA (like calcium) have 2 valence electrons. Likewise, elements in Group IIIA (like aluminum) have three valence electrons. This rule applies to all elements located in 'A' groups. For example, simply by looking at the periodic table, you can tell that fluorine has seven valence electrons because it is located in Group VIIA. In answer to your question, from left to right, on the periodic table, the number of valence electrons an element has increases.
Wiki User
∙ 12y ago
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What major change occurs as you move left to right on the periodic table?
As you move left to right on the periodic table, the number of valence electrons an element has increases. The number of valence electrons an element has corresponds to which group (column) an element is. (This rule does not apply to transition metals...)
What is the repeating pattern that occurs left and right?
If you mean the repeating pattern from left to right that occurs in the Periodic Table of the Elements, it is called the Law of Octaves. This is because the pattern of periodicity occurs in groups of eight.
What kind of change occurs when a compond is separated into its components?
A chemical change occurs because compound is two elements put together so when they are separated it forms a new substance.
What occurs whenever valence electrons are shared or transferred between atoms?
Covalent bond
What is the term for the chemical change that occurs to wood when it is burned?
It is the oxidation of the elements of the chemicals that make up the wood - which are various organic compounds. These are released into the atmosphere as carbon dioxide, water vapour and oxides of other elements and compounds.
What major change occurs as you move left to right on the periodic table?
As you move left to right on the periodic table, the number of valence electrons an element has increases. The number of valence electrons an element has corresponds to which group (column) an element is. (This rule does not apply to transition metals...)
Is hydrogen manmade?
No, as it occurs in naturally occurring elements of the periodic table.
How many valence electrons does group 3A have?
Group One on the periodic table consists of * Li - Lithium * Na - Sodium * k - Potassium * Rb - Rubidium * Cs - Cesium All of these elements all have plus one (+1) valence electrons which means they have one too many so they will give it up when bonding occurs.
What is the repeating pattern that occurs left and right?
If you mean the repeating pattern from left to right that occurs in the Periodic Table of the Elements, it is called the Law of Octaves. This is because the pattern of periodicity occurs in groups of eight.
Is water cycle a periodic change?
Water cycle is a continuous process. It occurs every time.
What changes occurs during a nuclear change?
Elements are created that differ from the reactants.
What form is tin?
Tin is the number 50 on the periodic table of elements. Tin is obtained from the mineral Cassiterite, where it occurs as tin oxide.
What major change occurs as you move from left to right on the periodic table?
More subatomic particles, more mass
Is fettuccine alfredo a chemical change?
No, the making of alfredo sauce is simply the combining of elements/ingredients. No chemical change occurs.
Which electrons are involved in chemical bonds?
The outer shell, known as the valence; it is a good indicator of an elements reactivity. If you look at the periodic table, elements in group I and VII are highly reactive because they form ionic bonds very easily due to the fact that they have one and seven eletrons in their outer shell respectively, making each very close to the octet which is where elements seem to be stable. Those in group I easily lose their one eletron and those in group VII easily gain one. It also occurs with the other groups to a lesser degree.
What kind of change occurs when a compond is separated into its components?
A chemical change occurs because compound is two elements put together so when they are separated it forms a new substance.
How do balance the equation Li plus H₂O?
2Li+2H2O-->2LiOH+H2 A similar reaction occurs with all the other elements in the first column of the periodic table.
