there are 7 electrons in the outer energy level of group 17 elements
Group 17 has seven total valence electrons
They have 7 valence electrons. Just as group 16 has 6 and group 18 has 8.
Seven due to the fact that on the Periodic Table all group 17 elements have seven valence(outer) electrons.
Group 17 elements have 7 electrons in the outermost energy level.They are less reactive and belong to halogen group.For example electronic configuration of Fluorine is 2,7.
48 are in the group 17
1
7
The valence electrons for elements in the same group stay the same, since the number of valence electrons corresponds to the group number.
The group number tells you the number of valence electrons present.
The elements in the same group have the same number of valence electrons and hence similar chemical and physical properties.
The d-block elements have two electrons in their outermost s sublevels. The group 3 elements have one d electron in their outermost d sublevel, the group 4 elements have two d electrons, adding one additional d electron with each subsequent group until group 12 in which the elements have ten d electrons.
Main group elements within a column tend to gain or lose the same number of electrons................A+
Group 18 elements have a stable octet.
Group 8
Oxygen atoms have 6 electrons in the highest occupied energy level. They are two 2s electrons and four 2p electrons. All elements in Group 16 have 6 valence electrons. For Groups 13-18, subtract 10 from the group number and that gives you the number of valence electrons (the electrons in the highest energy s and p orbitals). The Group 1 elements have one valence electron and the Group 2 elements have two valence electrons. The transition metals can vary in the number of valence electrons. You can't necessarily go by group number for them.
Elements in group have same number of valence electrons. They also have same chemical properties.
Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).
All elements in the same group have the same number of valence electrons.
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.
The valence electrons for elements in the same group stay the same, since the number of valence electrons corresponds to the group number.
Because groups/families determine how many valence electrons the element will have. Therefore, all the elements in a group/family have the same number of valence electrons Chemimal and Physical.
Elements in the same group have the same number of valence electrons.
The noble gases is the most stable group of elements. They have their outer electron energy levels full, but the number of electrons vary according to which noble gas it is. They are group 18 on the periodic table.
All elements in the same A group will have the same number of valence electrons.