The compound NaCI is an example of a salt. Salt is formed from a neutralization action of an acid and a base.
The atomic number of sodium is 11. Sodium is a metal and it has the electronic configuration: 2, 8,1. This configuration implies that, the electrons in an atom of sodium are distributed into three different shells and the outermost shell has one electron in it. If sodium decide to give away the electron on its outermost shell, it will have 10 electrons left and those electrons will be distributed in only the first two shells and then it will be described as an ion. The third shell will not exist again because the electron there has been given away. Thus, the sodium ion is going to have a smaller atomic radius because its size has been reduced. This implies that the sodium ion will have a smaller radius than the sodium atom.
Which statements accurately describe volume? Check all that apply.
Answer:
Volume is a physical property of an object
One unit of volume is the milliliter
Liquids and solids have constant volumes
Explanation:
Explanation:
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NaOH = 40.0 g/mol) _M
The molarity of 6.00 liters of an aqueous solution that contains 80g of sodium hydroxide is 0.33M.
Molarity = no. of moles ÷ volume
Molarity = 2mol ÷ 6L
Molarity = 0.33M
Therefore, the molarity of 2.0 liters of an aqueous solution that contains 0.50 mol of sodium hydroxide is 0.33M.
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(2) 79 (4) 197
The atomic number of an element is the number of its protons. Here, the total number of electrons is 79 and thus the element s having 79 protons also. Thus, option 2 is correct.
An atom is composed of nucleus and and electrons. Protons and neutrons are located inside the nucleus. Electrons are revolving around the nucleus.Electrons are negatively charged particles and protons are positively charged whereas neutrons are neutral.
The atomic number of an element is the number of its electrons or protons. For a neutral atom the number of electrons and protons are equal. Thus all the positive charges are neutralized by equal number of negative charges.
The electrons are filled in different orbitals and from the configuration we can understand the number of electrons given is 79. Thus its number of electrons and protons is 79.
Hence, the number of protons for the element with the given electronic configuration is 79. The name of this element is gold.
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the answer is not 3 but i am guessing 6 please let me know