If we know the number of protons, then any other information we don't need. The number of protons defines which element an atom is. If the number changes, then the type of element changes along with it. The number of protons is the same as the atomic number, so if you can locate a Periodic Table, you would see that element number 7 is nitrogen. If we wanted to be specific to the isotope, we could also say that it is 14N, with the 14 representing the mass number - the sum of the number of protons and neutrons.
Yes. Different isotopes of an element always have the same number of protons because the number of protons determines the elemental identity of the substance. It is the number of neutrons that changes to make up the different isotopes of a given element.
Atoms all have a similar structure - they have a nucleus surrounded by one or more electrons. Each nucleus is made of protons and neutrons. All atoms of a particular element all have the same number of protons and electrons, and usually have the same number of neutrons too (although sometimes these differ) in all their atoms. Different elements have different amounts of these fundamental particles in their atoms. The first few elements (in terms of numbers of protons starting with 1, 2 3 etc) have numbers of protons, neutrons and electrons as follows: Hydrogen: 1 proton and 0 neutrons in the nucleus and 1 electron in orbit around it. Helium: 2 protons and 2 neutrons in the nucleus and 2 electrons in orbit around it. Lithium: 3 protons and 4 neutrons in the nucleus and 3 electrons in orbit around it. Beryllium: 4 protons and 5 neutrons in the nucleus and 4 electrons in orbit around it. Boron: 5 protons and 5 neutrons in the nucleus and 5 electrons in orbit around it. Carbon: 6 protons and 6 neutrons in the nucleus and 6 electrons in orbit around it. Nitrogen: 7 protons and 7 neutrons in the nucleus and 7 electrons in orbit around it. Oxygen: 8 protons and 8 neutrons in the nucleus and 8 electrons in orbit around it. So, the only difference between any of the elements e.g. oxygen and nitrogen is the number of particles in the atoms of each gas. Just as the words 'GOD' and 'DOG' represent totally different things despite being made of the same letters, all the elements in the universe from hydrogen to iron, from gold to tin are all different, look different, behave differently and so on, simply because, in their atoms they have different numbers of the fundamental particles, protons, neutrons and electrons.
To answer the second part of your question, an element with varying neutrons is an isotope, and to determine which isotope it is we have the chemical symbol plus the mass number (ie C-14). Going back to the first part, this question is a bit flawed. Protons are relative to the element itself. The atomic number is equal to the number of protons. So nitrogen will always have 7 protons. Neutrons have no charge (neutron=neutral), so a varying amount of neutrons will not affect the charge. To alter your charge you need to look into the amounts of electrons as relative to the amounts of protons, but that's a different matter.
It would still be called carbon. THIS ACTUALLY EXISTS! The number of protons determines an element. Atoms with the same number of protons but different numbers of neutrons are said to be different ISOTOPES of an element. For example, the most common isotope of carbon is called carbon-12; since carbon has 6 protons, it means that the remaining 6 particles are neutrons. However, carbon-13 (6 protons, 7 neutrons) and carbon-14 (6 protons, 8 neutrons) also exist in nature.
Nitrogen-14 and nitrogen-15 differ in their atomic mass. Nitrogen-14 has 7 protons and 7 neutrons, while nitrogen-15 has 7 protons and 8 neutrons. This difference in neutron count results in different atomic weights for the two isotopes.
Five protons makes this the element boron. The number of protons is the atomic number, and determines the identity of an element. This example would be the boron-12 isotope because it contains 5 protons and 7 neutrons.
Elements are determined by their number of protons. Nitrogen has 7 protons but usually 7 neutrons as well. What you have here is a nitrogen isotope, an element with more or less neutrons than there are protons. Specifically, this is Nitrogen-15.
The element with 5 protons and 7 neutrons would be Boron (atomic number 5). However, the element also having 5 electrons doesn't match the standard atomic structure, so it could be an ionized form of Boron.
The element with 7 electrons, 7 protons, and 8 neutrons is nitrogen-15 (15N).
7
Boron-12 has 5 protons and 7 neutrons.
Seeing the number of protons, I would guess nitrogen.
A neutral nitrogen atom has 7 protons, 7 neutrons, and 7 electrons. If it is electrically charged, the number of electrons will be different. If it is an isotope of nitrogen other than the most common (N-14), the number of neutrons will be different. Protons = Atomic Number Neutrons = Atomic Mass - Protons Electrons = Protons Atomic number is the amount of protons in element.
A positively charged ion of oxygen
Well that must be the fictional isotope of boron which strangely can have a charge of - 7.
If we know the number of protons, then any other information we don't need. The number of protons defines which element an atom is. If the number changes, then the type of element changes along with it. The number of protons is the same as the atomic number, so if you can locate a Periodic Table, you would see that element number 7 is nitrogen. If we wanted to be specific to the isotope, we could also say that it is 14N, with the 14 representing the mass number - the sum of the number of protons and neutrons.
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. In this case, the element has 7 protons and 8 neutrons, so the atomic mass would be 7 + 8 = 15 atomic mass units.