Between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
Periodic table is defined as a method of showing elements in a table where similar-property elements are grouped or displayed in the same vertical column. It is frequently recognized as a symbol of chemistry and is used extensively in physics, chemistry, and other sciences. It is a visual representation of the periodic law, which claims that the atomic numbers of chemical elements have a roughly periodic relationship with their attributes.
The element X is a member of the 15th group and third period. There will therefore be three shells in the atom, and its valence shell will contain five electrons. The electronic setup will therefore be 2, 8, 5. In addition, X's atomic number is 15 (2 + 8 + 5).
Thus, between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
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The lattice energy in the formation of one mole of BaSe bonds can be calculated using the equation Ulattice = (k * e2) / r, where k is the proportionality constant, e is the charge of the ions, and r is the distance between the ions. Given the radius of the barium ion and selenide ion, we can calculate the distance between them and then use it in the equation to find the lattice energy. The lattice energy in this case is approximately 10.8 billion N.
The amount of energy released in the formation of one mole of BaSe bonds can be calculated using the concept of lattice energy. Lattice energy is the energy released when ions come together to form a solid lattice structure. In this case, we have a barium ion (Ba2+) and a selenide ion (Se2-) coming together to form BaSe bonds.
To calculate the lattice energy, we can use the equation:
Ulattice = (k * e2) / r
Where:
Given that the radius of the barium ion is 1.35 Å and the radius of the selenide ion is 1.98 Å, we can calculate the distance between them and then use that value in the equation to find the lattice energy.
Let's calculate it:
Distance between ions = radius of Ba ion + radius of Se ion
= 1.35 Å + 1.98 Å
= 3.33 Å
Converting to meters:
= 3.33 * 10-10 m
Now, substituting the values in the equation:
Ulattice = (8.99 * 109 Nm2/C2) * (2 * 2) / (3.33 * 10-10 m)
= 10791849712.91 N
Therefore, the amount of energy released in the formation of one mole of BaSe bonds (lattice energy) is approximately 10.8 billion N.
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Whiskers and beaks are two examples of _____. electroreceptors mechanoreceptors olfactory receptors photoreceptors
Whiskers and beaks are two examples of olfactory receptors. An olfactory receptor is a smell receptor that contains a protein capable of binding odor molecules that plays the central role of smell.
Answer:
its mechanoreceptors
Explanation:
mechanoreceptors react to pressure and distortion.
SiC
C25H52
Zn
Answer:
The paraffin is the softest.
Explanation:
The others materials, they have a bigger value of hardness in Mohs scale, like the CuO with a value of 3.5, the SiC with a value of 9, and Zinc with a value of 2.5.
To determine how much of a 144g sample of carbon-14 will remain after 1.719 x 10^4 years, you can use the formula for exponential decay:
\[N(t) = N_0 \cdot \left(\frac{1}{2}\right)^{\frac{t}{T}}\]
Where:
- \(N(t)\) is the remaining amount after time \(t\).
- \(N_0\) is the initial amount.
- \(t\) is the time that has passed.
- \(T\) is the half-life.
In this case, \(N_0\) is 144g, \(t\) is 1.719 x 10^4 years, and \(T\) is the half-life of carbon-14, which is 5,730 years.
Plug these values into the formula:
\[N(t) = 144g \cdot \left(\frac{1}{2}\right)^{\frac{1.719 \times 10^4\text{ years}}{5,730\text{ years}}}\]
Now, calculate:
\[N(t) = 144g \cdot \left(\frac{1}{2}\right)^{\frac{3}{2}}\]
\[N(t) = 144g \cdot \left(\frac{1}{2} \cdot \frac{1}{2} \cdot \frac{1}{2}\right)\]
\[N(t) = 144g \cdot \frac{1}{8}\]
Now, multiply 144g by 1/8 to find the remaining amount:
\[N(t) = \frac{144g}{8} = 18g\]
So, after 1.719 x 10^4 years, only 18g of the 144g sample of carbon-14 will remain.