toward the left- apex
Helium has 2 valence electrons.
The group number is found by the number of valence electrons. The period number is found by the number of energy levels. These 2 controls the position of an element.
Row 3, Period 2.Chlorine: Atomic # 17, Cl, Halogen Family.As for the Block, it is in the S block.It has 7 Valence Electrons.
Hafnium may be found in column 4 of a wide form periodic table. This indicates that it has four valence electrons.
The "valence" electrons are responsible for chemical reactions and bonding. Valence electrons are found in the outer most orbital of the atom, farthest away from the nucleus.
The number of valence electrons in any element can be found from the element's group number on the periodic table. Phosphorus has a group number of 5 (15 in some periodic tables, in which case the valence is the group number minus ten). Thus, phosphorus has 5 valence electrons.
the one u didnt no about!
valence electrons are the electrons found in the outermost energy level of bohr diagram for an element.
The valence electrons are found in the outer shell of an atom, in the s and p orbitals. They are the electrons involved in ionization and any chemical bonds (ionic, polar or covalent). There can be up to 8 valence electrons, and the number available on an atom of any particular element can be determined from its position on the periodic table.
Helium has 2 valence electrons.
The period (row) indicates how many electron shells the element has and the family (column) indicates how many valence electrons the element has.
This element is sulfur; the electron configuration of sulfur is [Ne]3s23p4. Sulfur has three electron shells cotaining 2, 8 and 6 electrons. The last six are valence electrons.
Halogens have 7 valence electrons. They can be found on the second column from your right on the periodic table
The valence electrons are the outer most electrons and the principal energy level in which they belong will vary for element to element and generally corresponds to the period number in which the element is present
The electrons in the atom are found on the outer rings, the limit of 2 on the first up to 8 on the valence ring. The number of the electrons found on the valence ring determines where the chemical is placed on the Periodic Table.
A neutral atom of silicon will have 4 valence electrons. The amount of valence electrons that a neutral atom will have can be found by the atoms group number in the periodic table.
The answer your teacher is expecting is "calcium", though your teacher should have worded the question better; there are no alkali metals with 2 valence electrons. Calcium is an alkaline earth.