What element has 3 electrons in the 3rd energy level?
ElementElement NumberNumber of Electrons in each Level3rd LevelHydrogen1Helium2Lithium
What element has 3 electron shells?
List of elements with electrons per shellZElementNo. of electrons/shell1Hydrogen12Helium23Lithium2, 14Beryllium2,
What element has 3 protons?
A lithium atom contains 3 protons in its nucleus irrespective of the number of neutrons or electrons. Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always 3. The mass number, however, is 6 in the isotope with 3 neutrons, and 7 in the isotope with 4 neutrons.
Which element has 10 neutrons?
How many electrons are in each orbital of carbon?
So for the element of CARBON, you already know that the atomic number tells you the number of electrons. That means there are 6 electrons in a carbon atom. Looking at the picture, you can see there are two electrons in shell one and four electrons in shell two.
What is the element with 12 protons?
NameMagnesiumAtomic Mass24.305 atomic mass unitsNumber of Protons12Number of Neutrons12Number of Electrons
What element has 2 protons and 2 neutrons?
2.1 Electrons, Protons, Neutrons, and AtomsElementSymbolAtomic No.HydrogenH1HeliumHe2LithiumLi3
What is the element that has 20 neutrons?
Electron structure of the first 20 elementsElementAtomic numberTotal number of electronsChlorine1717Argon1818Potassium1919Calcium20
Which electrons are the valence electrons of the atom?
Chemical reactions. The number of electrons in an atom’s outermost valence shell governs its bonding behavior. Therefore, elements whose atoms can have the same number of valence electrons are grouped together in the periodic table of the elements.
What is the element with 11 protons?
Example: A sodium atom contains 11 protons, so its atomic number is 11. Mass number is the total of the protons and neutrons together, and it is given the symbol A. Example: A sodium atom contains 11 protons and 12 neutrons; its mass number A is 23.
How many neutrons are in the most common version of platinum?
NamePlatinumAtomic Mass195.078 atomic mass unitsNumber of Protons78Number of Neutrons117Number of Electrons78
What do you call electrons in the highest energy level?
The larger the number of the energy level, the farther it is from the nucleus. Electrons that are in the highest energy level are called valence electrons.
What element has 5 protons and neutrons?
NameBoronAtomic Mass10.811 atomic mass unitsNumber of Protons5Number of Neutrons6Number of Electrons5
What element has 9 protons neutrons and electrons?
What metal has 28 electrons?
NICKEL – I am a metal with 28 electrons. 7. ALUMINUM – I am a member of the boron family and am the most abundant metal in the Earth’s crust. 8.
What is the element with 11 electrons?
For any neutral atom, the number of protons is the same as the number of electrons. If an atom loses or gains electrons, it is called an ion. This is a picture of a sodium atom. It has 11 protons, 11 electrons and 12 neutrons.
How do you find the energy level of an element?
Energy Levels. When you look at the Periodic Table of the Elements, the energy levels of the atoms correspond to the rows of the table. The two elements in the top row, hydrogen and helium, are filling their first energy level with their final electrons.
Which element has 6 protons?
What is the element that has 0 neutrons?
What element has 20 protons and 20 neutrons?
NameCalciumAtomic Mass40.078 atomic mass unitsNumber of Protons20Number of Neutrons20Number of Electrons20