Table of Contents
- 1 What is the element with electronic configuration 2 8 7?
- 2 What is the atomic number of an atom if its electronic configuration is 2/8 5?
- 3 What is the element with the electron arrangement 2 8 2?
- 4 Which element has the electron arrangement 2 8 8?
- 5 How do you write the atomic number?
- 6 What is the atomic number of the element with the Formula⇒2+8+7?
- 7 What is the electron configuration for the last 5 electrons?
What is the element with electronic configuration 2 8 7?
As the electronic configuration of the given atom is 2,8,7 it is inferred that the atomic number of element is 17 (2+8+7). Thus element with atomic number 17 is Chlorine. Among the options given which includes Nitrogen, Fluorine, Phosphorus and Argon, chlorine is chemically similar to fluorine.
What is the atomic number of an element having electronic configuration as 2 8 1?
– As we know that the element that has an electronic configuration (2,8,8,1), hence there are two electrons in K shell, 8 electrons in L shell, 8 electrons in M shell and 1 electron in N shell. Thus, the total number of electrons is 19. We can see that the given element is potassium.
What is the atomic number of an atom if its electronic configuration is 2/8 5?
Answer: a,_atomic number of this element is 15.
Which of the following atoms has the electron orbit arrangement 2 8 7 when neutral?
chlorine
The electron arrangement of chlorine is (2, 8, 7).
What is the element with the electron arrangement 2 8 2?
Magnesium has the electronic configuration 2 , 8 , 2 .
What is the atomic number of the element?
number of protons
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
Which element has the electron arrangement 2 8 8?
Argon
List of elements with electrons per shell
| Z | Element | No. of electrons/shell |
|---|---|---|
| 15 | Phosphorus | 2, 8, 5 |
| 16 | Sulfur | 2, 8, 6 |
| 17 | Chlorine | 2, 8, 7 |
| 18 | Argon | 2, 8, 8 |
What is the electron arrangement 2 8 8?
Different shells can hold different maximum numbers of electrons. Electrons occupy shells starting with the innermost one. They begin to occupy the next shell when a shell becomes full….Electrons in shells.
| Electron shell | Maximum number of electrons |
|---|---|
| First | 2 |
| Second | 8 |
| Third | 8 |
How do you write the atomic number?
Atomic number
- The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element.
- The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom.
Which element has electronic configuration 2 8 7?
The element having electronic configuration 2,8,7 is Chlorine . it is the member of group 17 .
What is the atomic number of the element with the Formula⇒2+8+7?
⇒ 2+8+7 = 17. Therefore, the atomic number of this element is 17 and the element is chlorine. It would be chemically similar to F (9) with configuration as 2, 7.
How many valence electrons are there in 2 8 7?
Answer. (a)The atomic number of element with electronic configuration 2,8,7 =17. (b)It has 7 valence electrons, therefore it would be chemically similar to F (9) =2,7.
What is the electron configuration for the last 5 electrons?
The systematic way of writing the configuration is 1s2 , 2s2 2p6 , 3s2 3p5 . so the last 5 electrons are in filled in p subs hell . Chlorine. How this 19-year-old earns an extra $3600 per week. His friends were in awe when they saw how much money he was making. How can iron have an electronic configuration of 2, 8, 14, and 2?