The number of protons in the nucleus of an atom is its atomic number (Z). This is the defining trait of an element: Its value determines the identity of the atom. For example, any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.
What determines the chemistry of an element?
The chemical properties of an element are determined by the number of electrons in its atom, which in turn is determined by the number of protons.
What particle determines the chemistry of an atom?
The number of protons in the nucleus determines which element an atom is, while the number of electrons surrounding the nucleus determines which kind of reactions the atom will undergo. The three types of subatomic particles are illustrated below for an atom of helium—which, by definition, contains two protons.
What determines the chemical bonding properties of an atom?
The number of electrons in an atom determines bonding and other chemical properties. In a neutral atom, the atomic number, Z, is also the number of electrons. These electrons are found in a cloud surrounding the nucleus, located by probability in electron shells or orbitals.
What determines the chemical properties of an atom quizlet?
The chemical properties of an element, are determined by the number of protons in the nucleus. This number of protons is called the atomic number. The mass of the atom, its atomic mass, depends upon the sum of the number of protons and the number of neutrons present in the nucleus.
What determines the identity of an atom quizlet?
The identity of the atom is determined by the number of protons; an atom with five protons has different properties than an atom with six protons. small mass. We use a very small unit of mass to measure them, and this unit is called an atomic mass unit (amu).
What determines atom reactivity?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.
How do electrons determine the chemical behavior of an atom?
Electrons located in the outermost shell of the electron cloud are called “valence electrons” and have the highest energy. Valence electrons determine the chemical properties of an element, or how the valence electrons of one element are shared or traded with valence electrons of other elements to create new molecules.
Why do electrons determine the chemical behavior of an atom?
The electrons in the energy levels with the highest number are, on average, the farthest from the nucleus. Because differences in electrons located in the outermost level distinguish an atom from its nearest noble gas, these are the electrons responsible for the atom’s chemical behavior.
Why do protons determine the identity of an atom?
Proton is one of the subatomic particles which has a positive charge. The number of protons present will give the atomic number of the chemical element. Every element will have a unique atomic number. Thus, we can say that protons will determine the identity of an element.
Do protons determine chemical properties?
The nucleus is composed of protons with a positive charge and neutrons without charge, and the number of protons (atomic number) determines the chemical properties of the atom (element type).
Which of these determines the chemical behavior of an atom quizlet?
The chemical behavior of an atom is determined by the distribution of electrons in electron shells.
What property of an atom determines its atomic mass?
Together, the number of protons and the number of neutrons determine an element’s mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.
What determines similarities in chemical behavior of the atoms quizlet?
The chemical behavior of an atom is largely determined by the distribution of its electrons, particularly the number of electrons in its outermost level.
What determines the reactivity of an element quizlet?
An element’s reactivity is determined by the number of protons found in an atom of the element. The force of attraction that holds two atoms together is called a chemical bond.
How is the atomic number of an atom determined?
The number of protons in a nucleus is called the atomic number and always equals the number of electrons in orbit about that nucleus (in a nonionized atom).
How does an atom react chemically depends?
How an atom reacts chemically depends on how willing it is to share electrons with others.
Does more electrons mean more reactive?
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
Do neutrons or protons determine the element?
An element and its location in the periodic table is determined according to the number of protons in the nucleus.
Do neutrons affect chemical properties?
The number of neutrons in a nucleus affects the mass of the atom but not its chemical properties.
Which subatomic particle determines the behavior of an atom?
The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Which of the following subatomic particles determines the chemical element quizlet?
An atom that has the same number of protons but a different number of neutrons. Which subatomic particle determines the identity of an element? Protons.
What is a compound in chemistry quizlet?
Compound. A compound is a substance made up of atoms of more than one element joined together in a molecule.
What are the 4 properties of the atom?
- Van der Waals radius.
- Ionic radius.
- Covalent radius.
- Metallic radius.
What is atomic structure in chemistry?
Atomic structure refers to the structure of an atom comprising a nucleus (centre) in which the protons (positively charged) and neutrons (neutral) are present. The negatively charged particles called electrons revolve around the centre of the nucleus.