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Which group on the periodic table tends to have seven valence electrons?
Wiki User
∙ 11y ago
halogens or group 17
Wiki User
∙ 11y ago
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How many electrons on their outer shell does bromine have?
Seven , outer shell electrons or valence electrons increase as you move from left to right on the periodic table not including the transition metals which vary, they start with 1 valence in the alkali earth metals , and finish with 8 valence electrons on the noble gasses (group 18)
What change occurs in valence shells of elements as you move from left to right in any given row of the periodic table?
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.
What elements have seven valance electrons?
The halogens have seven valence electrons. The halogens are F, Cl, Br, I, and At. Fluorine
Is an element with seven valence electrons?
All of the Halogens (the second column from the right on the periodic table) have 7 valence electrons. This includes -Flourine -Chlorine -Bromine -Iodine
Does francium have seven valence electrons?
Francium has only one valence electrons.
How can i look at the periodic table and tell how many valence electrons an element has?
The group of the element indicates the amount of valence electrons. For example, the alkali metals have one valence electron and is in group one whilst the halogens have seven valence electrons and are in group seven.
What does the periodic table have seven of?
valence electrons and energy sublevels
What group of elements has seven valence electrons?
The name of the family is the Halogen family.
The number of electrons in the outer energy level of Group 17 elements is?
there are 7 electrons in the outer energy level of group 17 elements
How many electrons on their outer shell does bromine have?
Seven , outer shell electrons or valence electrons increase as you move from left to right on the periodic table not including the transition metals which vary, they start with 1 valence in the alkali earth metals , and finish with 8 valence electrons on the noble gasses (group 18)
What elements have seven valence electrons?
The halogens, or group 17
Which electron has seven valence electrons?
Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
What change occurs in valence shells of elements as you move from left to right in any given row of the periodic table?
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.
What rules are used to assign oxidation number?
First, determine which family it is in on the periodic table. The group number equals the number of valence electrons that it has. It needs to end up with eight valence electrons to have a full octet. So if it has seven valence electrons, it will gain one electron to be stable. On the other end of the table, it will lose electrons to be stable.
How many number of valence electrons in bromine?
Counting the 4th shell orbitals and their electrons, Bromine has two 4s electrons and five 4p electrons, giving it a total of 7 valence electrons.
What elements have seven valance electrons?
The halogens have seven valence electrons. The halogens are F, Cl, Br, I, and At. Fluorine
How many valence electrons does chlorine have?
The element chlorine has seven electrons in its valence shell.
