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How do you find the charge of an atom with 7 valence electrons?
The halogens, group 17, have 7 valence electrons. When they form ions, they gain 1 more valence electron and become ions with a charge of 1-.
What is an atom called that has lost valence electrons?
An atom that has lost valence electrons is called a cation. This causes the atom to have a positive charge due to having more protons than electrons.
What number of valence electrons in fluoride?
To answer this question and all other questions about valence electron, you should know where the element is on the periodic table. You can see that F is the 7th group. F is fluorine, which has 7 valence electrons. Fluoride is F with a negative charge which means it has one more electron, so Fluoride has 8 valence electrons.
What element has two valence electons?
Here at Afuelscience.com we use this method...the number of valence electrons is the number of s and p electrons in the outermost shell (highest n). The number of valence electrons can also be determined by counting across the period, skipping the transition metals, until the element is reached. It is also the group number. If there is more than one atom, the number of valence electrons is the sum of all the atoms in the molecule or polyatomic ion. For ions, add the value of a negative charge and subtract the value of a positive charge. >> Example 1 How many valence electrons are in the following? # N # H2S # CO32- # NH4+ Solution: # Nitrogen is in group 5A. It has five valence electrons. # Hydrogen has one valence electron, and sulfur has six. The total for the molecule is 2(1) + 6 = 8. # Carbon has four valence electrons; oxygen has six; then two for the charge. 4 + 3(6) + 2 = 24. # Nitrogen has five valence electrons; hydrogen has one, minus one for the charge. 5 + 4(1) - 1 = 8.
If after drawing a Lewis structure too many valence electrons have been used the molecule probably contains what?
If too many valence electrons have been used in a Lewis structure, the molecule likely contains a formal charge or involves resonance structures. It may indicate the presence of double or triple bonds, or that the central atom has expanded its octet, allowing it to accommodate more than eight electrons. Additionally, this situation can arise when considering species such as polyatomic ions or molecules with elements in the third period or beyond, which can hold more electrons.
How do you find the charge of an atom with 7 valence electrons?
The halogens, group 17, have 7 valence electrons. When they form ions, they gain 1 more valence electron and become ions with a charge of 1-.
If an atom has four valence electrons is it an anion?
No, having four valence electrons does not determine whether an atom is an anion. An anion is formed when an atom gains electrons to have a negative charge. If the atom with four valence electrons gains four more electrons, it would become an anion.
How many valence electrons does anion of OCl?
The anion of OCl (hypochlorite ion) has 8 valence electrons. This is because oxygen contributes 6 valence electrons and chlorine contributes 7 valence electrons. The overall negative charge of the anion adds one more electron, totaling 8 valence electrons.
How is the number of valence electrons of a nonmetal related to the charge on the ion the nonmetal?
Nonmetals will undergo chemical reactions that result in a stable electron configuration of 8 electrons in the outer shell. The number of valence electrons tells you have many they have in their outer shell prior to any chemical reaction, and therefore, how many more electrons they need to get a complete set of 8. So for example, oxygen has 6 valence electrons and therefore needs 2 more to have 8, so it will form an ion with a charge of minus two, which is the charge that is carried by the additional two electrons that oxygen will acquire. Chlorine has 7 valence electrons, therefore it needs just one more electron to complete its outer shell, and as an ion will have a charge of minus one. Nitrogen has 5 valence electrons, so it needs 3 more, and will form an ion with a charge of minus three.
What is the net charge of a silicon atom if it gains three valence electrons?
The net charge of a silicon atom would be -3 if it gains three valence electrons. This is because each electron has a negative charge and adding three electrons would result in a total negative charge of -3. Silicon normally has 4 valence electrons, so adding 3 more would give it a total of 7 electrons, resulting in a net charge of -3.
What is an atom called that has lost valence electrons?
An atom that has lost valence electrons is called a cation. This causes the atom to have a positive charge due to having more protons than electrons.
What subatomic particles determine the charge of an atom?
Protons (+1 charge) and electrons (-1 charge) are the subatomic particles that determine the charge of an atom. Protons carry a positive charge, while electrons carry a negative charge. The number of protons in an atom determines its overall positive charge, while the number of electrons determines its overall negative charge.
What is the total number of valence electrons in the Lewis structure of PBr4 plus?
For PBr4^+ you have...Valence electrons in P = 5Valence electrons is Br = 7 and there are 4 of them so total = 28This gives a total of 33, but you subtract 1 because of the + charge on the ion,Thus total valence electrons shown in the Lewis dot will be 32.
How is it possible that sodium has more volume than neon when neon has more valence electrons?
Although neon has more valence electrons than sodium, the size of an atom is primarily determined by the number of electron shells. Neon's higher nuclear charge causes its valence electrons to be held more tightly, resulting in a smaller atomic size. Sodium, with fewer valence electrons, has a larger atomic size due to less nuclear charge and more electron shells.
Which has more valence electrons atom or aluminum or phosphorus?
Aluminium has three valence electrons and phosphorous has five, hence the latter has more.
What number of valence electrons in fluoride?
To answer this question and all other questions about valence electron, you should know where the element is on the periodic table. You can see that F is the 7th group. F is fluorine, which has 7 valence electrons. Fluoride is F with a negative charge which means it has one more electron, so Fluoride has 8 valence electrons.
Polyatomic ion vs. covalent compound?
A polyatomic ion is a charged species composed of two or more atoms held together by covalent bonds, giving it a net charge. In contrast, a covalent compound is a molecule formed when two or more nonmetal atoms share electrons to form covalent bonds, with no overall charge.
