0
The number of electrons usually does not equal the number of protons.
Valence means outermost. In an electrically neutral atom (which in Gen Chem is the only atoms you will be dealing with) the number of outermost electrons usually does not equal the number of protons.
Chlorine has 7 valence electrons but it has 17 protons and if it is electrically neutral (which in gen chem it almost always is) it has 17 electrons.
Gen Chem 1:
it has 2 electrons in the first shell
then
it has 8 electrons in the second shell
then
it has 7 electrons in the outermost shell
Gen Chem 2:
it has 2 electrons in the 1s orbital
then
it has 2 electrons in the 2s orbital
then
it has 6 electrons in the 2p orbital
then
it has 2 electrons in the 3s orbital
then
it has 5 electrons in the 3p orbital
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Does the valence electrons equal the number of protons?
Rarely. The number of valence electrons of an element depends on it's position on the periodic table. Any given element can have between 1-8 valence electrons. The number of valence electrons increases left to right on the periodic table, while the number of protons, which determine the atomic mass and identity of an element, increase in general. Therefore the number of valence electrons can only equal the number of protons at the 8th element and below (neon).
How many protons neutrons and valence electrons does sulfur have?
16 protons and 16 electrons as the atomic number of sulfur is 16. 16 neutrons in S-32 isotope.
What Does the number of protons always equal to?
No An atom may have less, the same, or more neutrons than protons. The number of neutrons determine which isotope of an element you have. You do expect the number of protons and electrons to be the same however. If an atom loses or gains an electron to cause the number of electrons and protons to be mismatched we call that an ion rather than an atom.
What is the number of valence electrons in group one?
Valence electrons are the electrons in the furthest electron shell from the nucleus.For the first three rows, essentially, the number of valence electrons is the number of squares the element is away from the beginning of the row at the left.For example. Sodium is the first (group 1) it has 1 valence electron. Magnesium is the second, it has 2 valence electrons.
What happens when the number of protons and electrons are un equal?
The atom is unstable and tries to combine with another element to balance it out. Oxygen has two less electrons in its valence shell, so it attracts two hydrogens, both of which have an extra electron (H2O)
Is the number of valence electrons equal to the number of protons?
No, the number of total electrons is equal to the number of protons.
Does the valence electrons equal the number of protons?
Rarely. The number of valence electrons of an element depends on it's position on the periodic table. Any given element can have between 1-8 valence electrons. The number of valence electrons increases left to right on the periodic table, while the number of protons, which determine the atomic mass and identity of an element, increase in general. Therefore the number of valence electrons can only equal the number of protons at the 8th element and below (neon).
Atomic number is equal to?
no of the protons or the no of electron is equal to the atomic no denoted by the symbol Z
How many protons and eletrons does carbon have?
count the number of protons which will be equal to number of electron.
What is equal to the number of protons and is different for each element?
electron
What is the valence number for helium?
He has 2 valence electrons. Look on a periodic table. It will show He only has 2 protons and the number of protons and electrons is equal. It is an exception to the rule of group numbers corresponding to valence numbers.
What is the charge of an atom that has an equal number of protons and electron?
It is a neutral atom
What is the number of valence electrons for the elements in group 1?
The elements in Group 1 have one valence electron in their outermost s orbital.
An atom with an equal number of electrons and protons has no?
An atom with an equal number of electrons and protons has no net electrical charge, as the number of positive (proton) and negative (electron) charges are balanced.
Are valence electrons the number of protons?
Only for hydrogen and helium are these two numbers the same. All other elements have at least two non-valence electrons, and the total number of electrons must be equal to the number of protons. Therefore, in all elements except hydrogen and helium, the number of valence electrons is less than the number of protons.
How do you get the number of an electron in an atom?
The number of electrons is equal to the number of protons (atoms are neutrally charged but ions are not). The number of protons is the atomic number (look at a periodiic table).
Why does proton and electron are equal atomic number?
They have not atomic numbers. Atomic number is made by number of protons an atom has.
