silicon
lead
bismuth
Bismuth will not have the same number of valence electrons.
Valence electrons are those that are found in an atom's outermost electron shell. These electrons are involved in bonds and reactions because they are the farthest from the nucleus and as a result are less tightly held by the atom.
This implies that an element's reactivity, electronegativity, and the number of bonds it may form are all dependent on the number of valence electrons it possesses. The ability of an element to create bonds with other atoms is referred to as valence.
The number of hydrogen atoms an element can bond to (which is determined by how many valence electrons are available for bonding) has historically been used to determine an element's valence.
Therefore, Bismuth will not have the same number of valence electrons.
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Answer: The correct answer is bismuth.
Solution:
Bismuth is the member of group 15 of the periodic table.
Bismuth contains five valence electrons in its valence shell. Which can be seen from its electronic configuration:
Where as other three elements are the members of group 14 of the periodic table with three valence electrons in their respective valence shells.
John Dalton contribute to the understanding of the atom that all matter was composed of atoms, indivisible and indestructible building blocks.
While all atoms of an element were identical, different elements had atoms of differing sizes and mass.
An atom is a particle of matter that uniquely defines a chemical element.
An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties.
Dalton based his theory on the law of conservation of mass and the law of constant composition.
The theory states that all matter is made of atoms, which are indivisible.
(1) All matter is composed of tiny, indivisible particles, called atoms, that cannot be destroyed or created.
(2) Each element has atoms that are identical to each other in all of their properties.
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(2) –2 (4) +17
The charge of the nucleus in an atom of oxygen is +8. The correct option is 3.
The charge is negative or positive or neutral charges present on the substance or molecule. The charges are produced by the gaining or losing of electrons.
The charges tell the tendency of the atom or molecule of gaining or losing of the atom.
Thus, the correct option is 3, +8.
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