These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses. Mass is the word for how much substance (or matter) something has.
Beside this, which element has the same number of protons and neutrons?
Isotopes
Similarly, why are the number of protons and neutrons the same? Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom.
Secondly, which elements have the same number of protons?
Atoms having the same number of protons (and therefore the same number of electrons) but different numbers of neutrons are called isotopes of the element in question. Thus, the isotopes of an element have the same atomic number but differ in their atomic mass number.
What atoms have the same number of protons and electrons?
Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).
Similar Question and The Answer
What element has 4 protons and 2 neutrons?
If scientists count four protons in an atom, they know it's a beryllium atom. An atom with three protons is a lithium atom, an atom with five protons is a boron atom, an atom with six protons is a carbon atom . . . the list goes on. Atomic Number. Name Helium Protons 2 Neutrons 2 Electrons 2 Atomic Number (Z) 2
What are neutrons made of?
Along with protons, neutrons make up the nucleus, held together by the strong force. The neutron is a baryon and is considered to be composed of two down quarks and one up quark. A free neutron will decay with a half-life of about 10.3 minutes but it is stable if combined into a nucleus.
What is the number of protons called?
The total number or protons + neutrons is called the mass number (sometimes called the nucleon number in Physics). The number of protons in an atom is called the atomic number (sometimes called the proton number in Physics). Below is Lithium (Li), it has 3 protons in the nucleus and 4 neutrons.
How many neutrons does nitrogen have?
7
Are protons and electrons the same?
Actually the proton and electron count of an atom are equal only when the atom is neutral in charge. The three atomic particles of an atom are the protons, which carry a positive charge, the electrons which carry a negative charge and the neutrons which have no charge.
What is the period of nitrogen?
Nitrogen is the seventh element on the periodic table. It is located in period 2 and group 15.
How do you find neutrons in an atom?
Take note that the nucleus of an atom is composed of protons and neutrons. And the number of particles present in the nucleus is referred as mass number (Also, called as atomic mass). So, to determine the number of neutrons in atom, we only have to subtract the number of protons from the mass number.
What is atomic mass number?
The mass number (symbol A, from the German word Atomgewicht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. The mass number is different for each different isotope of a chemical element.
How do I find the number of protons in an element?
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
Can 2 elements have the same number of protons?
Explanation: Atoms from two different elements may have the same number of neutrons, but never the same number of protons. The number of protons is unique to the element and represents the atomic number.
What is the charge of a proton?
Proton Charge While a proton has a charge of +1, or 1e, an electron has a charge of -1, or -e, and a neutron has no charge, or 0e. 1 elementary charge is equal to: 1.602 x 10^-19 coulombs.
What two numbers can be used to identify an element?
The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.
Why the mass number of lithium is 7?
“Mass number” refers to the total of protons + neutrons in the nucleus of an atom. The way to refer to a specific isotope, with a set number of protons and neutrons, is by following the name of the element with the mass number. So lithium-7, officially written Li, has a mass number of 7.
Why do protons determine an element's identity?
Protons contribute to the mass of an atom and provide the positive charge to the nucleus. The number of protons also determines the identity of the element. Electrons have a negative charge. An element's chemical properties depend on its valence electrons.