The meaning of ATOMIC NUMBER is an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines t
An element's atomic number directly correlates to the number of protons located in the nucleus of its atoms. In fact, the number of protons in the nucleus is the defining characteristic by which an atom is assigned its element. Answer and Explanation: ...
● He more protons than H / He greater nuclear charge than H (1) ● in helium the outer electron is in the same shell as hydrogen (1)H > Li:● in lithium the outer electron is in a higher energy level / a new shell / further from the nucleus / in a 2s orbital (1) ● (and...
Often, the number of protons and electrons is not the same, so the atom carries a net positive or negative charge. You can determine the number of electrons in anionif you know its charge. A cation carries a positive charge and has more protons than electrons. An anion carries a negative...
neutrons are found in the nucleus of the atom, while the electrons are outside the nucleus. The atomic number is the number of protons, while the mass number is the number of protons and neutrons. If an element is not charged, the number of electrons will equal the number of protons. ...
Helium=2 Lithium=3 Beryllium=4 Boron=5 Carbon=6 Nitogen=7 Oxygen=8 Finding the Atomic Number From the given information, we can find out the atomic number of an element in the following ways. First, if we know the number of protons in an atom of an element, we can find out the at...
Thus, tin (atomic number 50), with 50 protons in its nucleus, has 10 stable isotopes, whereas indium (atomic number 49) and antimony (atomic number 51) have only 2 stable isotopes apiece. The doubly magic alpha particle, or helium-4 nucleus, composed of two protons and two neutrons, is...
The number of protons in the nucleus of an atom is called theatomic number. It is represented by the symbolZ Example: Helium has an atomic number of 2 since it has two protons in its nucleus. Lithium has an atomic number of 3 since it has three protons in its nucleus. ...
mass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom. The mass number is commonly cited in distinguishing among the isotopes of an element, all of which have the same atomic number (number of protons) and are represented by the...
All elements in the periodic table are made of subatomic particles. These are protons, neutrons and electrons. The protons and neutrons are found in the centre of the atom, which makes up the atomic nucleus.Answer and Explanation: Become a member and unlock all Study Answers Try it risk-...