Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
![**Atoms, Ions, and Molecules**
**Counting Valence Electrons in an Atomic Ion**
---
**Question:**
How many valence electrons are in \( Ra^{2+} \)?
**Answer Input:**
- An input box where users can enter the number of valence electrons.
- Two buttons adjacent to the input box: one marked with an "X" to presumably indicate a reset or deletion of the entered input, and another with a circular arrow symbol possibly for refreshing the question or retrying.
**Interaction Buttons:**
- A clickable button labeled "Explanation" at the bottom-left which likely provides an explanation or hint related to the problem.
- A "Check" button next to the "Explanation" button for submitting the answer to verify correctness.
---
**Additional Information for Students:**
1. **Understanding Valence Electrons:**
- Valence electrons are the electrons located in the outermost electron shell of an atom and are involved in chemical bonding.
2. **Ions and Electron Configuration:**
- When an atom forms an ion, it gains or loses electrons. In the case of \( Ra^{2+} \), radium has lost 2 electrons.
3. **Radium (Ra) Specifics:**
- Radium has an atomic number of 88, which means in its neutral state, it has 88 electrons.
- The electron configuration for neutral radium is [Rn] 7s^2.
- When it loses two electrons to form \( Ra^{2+} \), those lost electrons are from the outermost shell, the 7s subshell.
Thus, the valence electrons in \( Ra^{2+} \) can be determined considering how the electron configuration changes upon ionization.
---
This educational tool helps students practice determining the number of valence electrons in various atomic ions through interactive questions, providing immediate feedback and explanations to support learning.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4cb3c08b-867c-49fa-a9fe-3ee9eddee973%2F03de39d2-a446-4c49-a04b-f0bb7111e8cb%2Fcyq66jb_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
