0
What is the number of neutrons in an atom with atomic mass of 35 and three energy levels and 7 valence electrons?
Wiki User
∙ 10y ago
There are 18 neutrons. If the valence level has 7 electrons, that means the first is full, and always has 2(unless its hydrogen which has 1) and the second will be filled with 8 making 17 total. Since the electrons always equal protons we know there are 17 protons. Since Atomic Mass is protons plus neutrons, and atomic mass is 35 we minus 17 form 35 and have 18.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Which electrons in an atomic take part in chemical bonding and what are they called?
outer energy level electrons... called valence electrons
Valence electron are found in what energy level?
Valence electrons are the electrons in the outermost energy level.
What element has 6 valence electrons in the 4th energy level?
This element is caesium (Cs), with the atomic number 56.
What are the electrons in the outer most energy level of an atom called?
valence electrons
How many valence electrons are on the first 3 energy levels?
The first energy level has a maximum of two valence electrons. The second and third energy levels have a maximum of 8 valence electrons.
What is an element with 7 valence electrons and 4 energy levels?
neutrons
How many electrons on the outermost energy level of atomic number 10?
There would be 8 valence electrons.
Which electrons in an atomic take part in chemical bonding and what are they called?
outer energy level electrons... called valence electrons
What is a mixture of sub atomic particles nuclei and electrons?
An ATOM. The sub-atomic particles are Protons, Neutrons. and Electrons. The protons and neutrons are collectively named 'nucleons, because they form the nucleus of an atom. The electrons are in energy shells around the nucleus.
How does the energy of the core electrons compare with the energy of valence electrons?
The energy of the valence electrons is greater than the energy of the core electrons.
How does the energy of core electrons compare with the energy of valence electrons?
The energy of the valence electrons is greater than the energy of the core electrons.
How does the energy of core electrons compare with that of valence electrons?
The energy of the valence electrons is greater then the energy of the core electrons.APEX
A neutral atom with an atomic number of 15 will have electrons in its outermost energy level?
The element is phosphorus and it contains 5 valence electrons.
How does the energy of core electrons compare with energy of valence electrons?
The energy is higher.
Which electrons have the most energy in an energy?
The valence electrons
Valence electron are found in what energy level?
Valence electrons are the electrons in the outermost energy level.
What element has 6 valence electrons in the 4th energy level?
This element is caesium (Cs), with the atomic number 56.
