The answer to your question is D. none of the above. Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms) gains or loses electrons. (A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. I hope this helps.
Answer:
The answer is C. a metal and a nonmetal.
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This bond is formed between two non metals. Example:
An ionic compound is formed when one element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal. Example:
Thus an ionic compound is typically made of a metal and a nonmetal.
TrueFalse
Answer:
True it is a metaphor
Explanation:
Answer: the mass of an electron is approximately 9.10938356 × 10^-31 kilograms (kg)
Explanation:
Answer:
Nitrogen atom (neutral)
- Atomic number: 7
- Atomic mass: 16
- #protons (+): 7
- #neutrons: 9 (Atomic mass - Atomic number)
- #electrons (-): 7
- Overall charge: 0 (neutral atom has equal number of protons and electrons)
- Electron configuration: 1s² 2s² 2p³ (two electrons in the 1s orbital, two electrons in the 2s orbital, and three electrons in the 2p orbital)
Nitrogen ion
- Atomic number: 7
- Atomic mass: 16
- #protons (+): 7
- #neutrons: 9 (Atomic mass - Atomic number)
- #electrons (-): 10 (one additional electron)
- Overall charge: -1 (negative ion, gained one electron)
- Electron configuration: 1s² 2s² 2p⁶ (two electrons in the 1s orbital, two electrons in the 2s orbital, and six electrons in the 2p orbital)
The atomic mass of #1 (neutral nitrogen atom) and #3 (nitrogen isotope) are different because they have different numbers of neutrons. The neutral nitrogen atom has 9 neutrons, while the nitrogen isotope has 9 neutrons. The electron configuration of #1 (neutral nitrogen atom) and #2 (nitrogen ion) is different because the nitrogen ion has gained one extra electron. The extra electron occupies an available space in the 2p orbital, resulting in a different electron configuration.
Diagram #2 is considered an ion because it has a different number of electrons than the neutral nitrogen atom. The nitrogen ion in diagram #2 has 10 electrons, one more than the neutral nitrogen atom. It is a negatively charged ion (-1) because it has gained one electron. This type of ion is called a nitride ion. The number at the end of the nitrogen isotope's electron configuration represents the number of electrons in the outermost energy level or shell. For nitrogen, the number at the end is 5, indicating that it has 5 electrons in its outermost shell.
Explanation:
hope it helped , darling :))
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The Lewis structure for the molecule CH3CH2NH3+ (ethylammonium) showcases hydrogen atoms bonded to carbon and nitrogen atoms. The positive charge resides on the nitrogen atom.
The molecule CH3CH2NH3+ is also known as ethylammonium, a form of a substituted ammonium ion. The Lewis structure of this molecule can be drawn based on the concept that hydrogen has one bond, carbon has four bonds, and nitrogen has three bonds and one lone pair of electrons. The positive charge in CH3CH2NH3+ is located on the nitrogen atom.
Here’s a simple way to draw it:
1. Draw a C atom connected to three H atoms, signifying the CH3 group.
2. Draw another C atom bonded to the first C and two H atoms, signifying the CH2 group.
3. Draw the N atom connected to the second C and three H atoms, signifying the NH3 group.
4. Mark a + sign near the N atom to indicate the positive charge.
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(2) melting and evaporating
(3) condensation and sublimation
(4) condensation and deposition
Melting and evaporating are the physical changes that are endothermic. Therefore, the correct option is option 2.
Physical modifications are those that modify a chemical substance's shape yet do not affect its chemical content. Physical changes may normally be utilised to separate compounds to chemical elements and simpler compounds, but they cannot be utilised for separate mixtures to their individual components. When something changes physically but not chemically, it is said to have undergone a physical transformation. This contrasts to the idea of a chemical change, when a material's composition changes or a substance or substances mix or separate to generate new compounds. Melting and evaporating are the physical changes that are endothermic.
Therefore, the correct option is option 2.
To know more about physical change, here:
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