Table of Contents
- 1 How many shells can an electron have?
- 2 What is the electron configuration of an atom with 43 electrons?
- 3 How many shells does an atom with 15 electrons have?
- 4 How many shells does be have?
- 5 Why is element 43 unstable?
- 6 How many electrons does group 16 have?
- 7 How many electrons does an iron atom have?
- 8 How many electrons does an aluminium atom have?
How many shells can an electron have?
This shell can contain a maximum of two electrons. The second shell can hold a maximum of eight electrons. When this is filled, electrons go into the third shell, which also holds a maximum of eight electrons….Electron shells.
| Energy shell | Maximum number of electrons |
|---|---|
| Second | 8 |
| Third | 8 |
What is the electron configuration of an atom with 43 electrons?
Technetium Atomic and Orbital Properties
| Atomic Number | 43 |
|---|---|
| Electron Configuration | [Kr] 4d5 5s2 |
| Valence Electrons | 4d5 5s2 |
| Oxidation State | -3;-1 1;2;3;4;5;6;7 |
| Atomic Term Symbol (Quantum Numbers) | 6S5/2 |
How do you know how many shells an atom has?
The number of electrons is equal to the atom’s atomic number, which is at the top left of the element. For example, assume you want to know how many rings are in the element neon. Neon on the periodic table has an atomic number of 10, so it has 10 electrons. Square the ring number, then multiply the result by two.
How many shells does an atom with 15 electrons have?
That means there are 15 electrons in a Phosphorus atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and five in shell three. ► More about the history and places to find phosphorus.
How many shells does be have?
So… for the element of BERYLLIUM, you already know that the atomic number tells you the number of electrons. That means there are 4 electrons in a beryllium atom. Looking at the picture, you can see there are two electrons in shell one and two in shell two. ► More about the history and places to find beryllium.
What element has 43 neutrons?
Technetium is a chemical element with the symbol Tc and atomic number 43.
Why is element 43 unstable?
Technetium is a radioactive element, with no stable isotopes. With an atomic number of 43, it is the lightest unstable element. The short answer is that there is no number of neutrons you can put in a technetium atom to form a stable nucleus.
How many electrons does group 16 have?
six electrons
The elements belonging to Group 16 of the periodic table are characterized by electron configurations in which six electrons occupy the outermost shell. An atom having such an electronic structure tends to form a stable shell of eight electrons by adding two more, producing an ion that has a double negative charge.
How many electrons can an atom have in one shell?
Shell depends on the number of electrons. It can has only one shell. Or as much as 8 shells like Unubinilium. Ununbinilium has 120 electrons in 8 shells, it is a group 2 period 8 element, the electron configuration is 2, 8, 18, 32, 32, 18, 8, 2.
How many electrons does an iron atom have?
An atom of iron contains a total of 26 electrons, with two in its first shell, eight in its second shell and 14 in its third shell. Electron shells are also known as energy levels.
How many electrons does an aluminium atom have?
Aluminium is the element with atomic number 13 and atomic weight 29.8. It has 13 electrons with K,L, M shells with K shell having 2 electrons, L shell with 8 electrons and M shell with 3 electrons revolving around the nucleas. M shell is the valency shell with 3 valence electrons. The atom will have three shells with electrons.
How many electrons does a calcium atom have?
Calcium has 20 electrons. (You can see this by looking at the atomic number of Ca on a.) The first 2 go in shell 1, leaving 18 more. 8 more go into shell 2, then 8 in shell 3. Then there are 2 left.