Which type of electrons are best at shielding a 3p electron?
81 Cards in this Set
| The original periodic table… | … predicted the properties of elements that were not discovered until later, had elements arranged by atomic mass, had 65 elements, and was developed by Dmitri Mendeleev. |
|---|---|
| Which type of electrons are best at shielding a 3p electron? 3p, 3s, 3d, 2p, 4p | 2p |
Which of the following is the correct condensed electron configuration for selenium Z 34 )?
Selenium has 34 elements. Its condensed electronic configuration is represented as [Ar]3d104s24p4 [ A r ] 3 d 10 4 s 2 4 p 4 .
What are some similarities amongst elements within a group?
The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements. Every element in the first column (group one) has one electron in its outer shell.
What is the 3p electron in an aluminum atom shielded by?
The electron being removed from an Al atom is a 3p electron, which is shielded by the two 3s electrons as well as all the inner core electrons. The electron being removed from a Mg atom is a 3s electron, which is only shielded by the inner core electrons.
Why does ionization energy drop from group VA to group via?
* The ionization energy decreases from one atom to the next as one goes down a group. This energy decrease is due to the fact that the valence electrons at a high energy level or a farther distance from the nucleus, which means the attraction of the electrons to the nucleus becomes smaller.
What is the electronic configuration of SE 34?
Properties
| Chemical Symbol: | Se |
|---|---|
| Atomic Number: | 34 |
| Atomic Weight: | 78.96 |
| Electron Configuration: | [Ar] 4s23d104p4 |
| Melting Point: | 493.65 K |
Which electron configuration is correct for the selenide ion Se2?
The electron configuration for a Se2- ion is [Ar] 4s2 3d10 4p6 or simply [Kr].
What are two things that elements in the same group have that make them similar?
The elements in the same group has similar number of valence electrons. They have identical number of electrons in their outermost shell. e.g. All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances.
What are two things that are elements in the same group make them similar?
All the elements in one group have the same number of valence electrons. The valence electrons are those on the energy level the most distant from the nucleus. These valence electrons are those involved in bonding with other atoms to form compounds.