sodium ion

So sodium has 11 protons and 11 electrons. The mass number is 23. The number of neutrons = mass number – atomic number. The number of neutrons = 23 – 11 = 12.

12 neutrons

So… for the element of SODIUM, you already know that the atomic number tells you the number of electrons. That means there are 11 electrons in a sodium atom.

Answer. There are 10 electrons present in Na+. The atom of sodium has 11 electrons, 11 protons along with 12 neutrons, but Na+ contains one less electron, 11 protons along with 12 neutrons, as the ion has lost 1 electron.

It helps keep the water (the amount of fluid inside and outside the body’s cells) and electrolyte balance of the body. Sodium is also important in how nerves and muscles work.

Neutral sodium atom (Na) becomes sodium cation (Na+) by releasing an electron. positive charge on the sodium cation is balanced by the negative charge on the chloride, so the ionic compound is neutral.

Both potassium and calcium belong to the 4th period in the periodic table of chemical elements. So, the atomic radius of potassium (K) is greater than that of calcium (Ca).

(ii) Explain why the radius of the S2- ion is larger than the radius of the S atom. The nuclear charge is the same for both species, but the eight valence electrons in the sulfide ion experience a greater amount of electron-electron repulsion than do the six valence electrons in the neutral sulfur atom.

O+1 ion contains 7 electrons and 8 protons ,O contains 8 electrons and 8 protons ,O-1 ion contains 9 electrons and 8 protons and O-2 ion contains 10 electrons and 8 protons. So O-2 is biggest in size.

As Br is smaller than Cl; therefore, Br- have a smaller ionization energy than Cl-. In short, since the outermost electron in bromine is farther from the nucleus than the outermost electron in chloride, it takes less energy to remove the outermost electron in bromide.

In your case, lithium has an atomic number equal to 3 and fluorine an atomic number equal to 9 . So fluorine has more protons in its nucleus. Keep this in mind. As a result, the atomic size of fluorine will be smaller than that of lithium, or, in other words, lithium will have larger atomic radius than fluorine.

As Na atom is larger than Li atom, therefore, Na+ ion is also bigger in size than Li+ion. (v) P or As: Both these atoms belong to group 15 of the periodic table. Since As is placed after P, therefore its size is large because atomic size increases down the group.

With this information, you know that each have the same number of shells, meaning the ionic size will be determined by the nuclear charge. Since sodium has a higher atomic number (number of protons), the nuclear charge will be stronger. For this reason, Na+ is smaller than F-. Why Ne atom has larger size than Na+ ion?

As you go from Na+ to Mg2+ to Al3+, the number of protons in the nucleus increases and so pulls the outer electrons in more and more. The same thing is true for the other set of ions as well. The smallest ion will be the one with the largest number of protons – Al3+; the biggest, the one with the least protons – N3-.

Mg2+ is smaller than Na+ because of two reasons . It is located to right of the Na+ atom in the 3rd Period and it also has +2 charge on it. Mg2+ is larger than Be2+ because Mg comes down in the group.

Explain your answer. mg2+ would be the smaller ion this is because each ion has the same number of electrons however mg2+ has a greater number of protons and therefore is more charge dense and the outer electrons feel a greater pull from the nucleus.

Similarly Li+ would be the smallest because it has only 2 electrons and therefore the least electron- electron repulsion. When comparing F- and Na +, we have to be careful, as both of them have 10 electrons. So Na+ is smaller due to the larger attractive force of the protons.

Obviously Magnesium Mg2+ will have higher force of attraction than Li+. So the ionic radii of the two varies due to the force of attraction. So Mg2+ tends to have smaller ionic radii compared to Li+ due to higher force of attraction.

11

** This is what we see on the periodic table. Sodium with 11 protons and 13 neutrons.

Mass number This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

#11 – Sodium – Na.

The name derives from the English soda and Latin sodanum for “headache remedy”. The symbol Na derives from the Latin natrium for “natron” (soda in English). Pure sodium was first isolated by Sir Humphry Davy in 1807 through the electrolysis of caustic soda (NaOH).

22.989769 u

Gold gets its English name from the Germanic word gulþa (meaning gold). The Old English word geolu means yellow. In Latin, gold was called aurum. This is why the chemical symbol for gold is Au.

Gold, also called golden, is a color. The web color gold is sometimes referred to as golden to distinguish it from the color metallic gold. The use of gold as a color term in traditional usage is more often applied to the color “metallic gold” (shown below).

Originally Answered: What is the most boring colour? Pantone 448 C, also known as the “The ugliest color in the world”, is a colour in the Pantone colour system.

Instead, the surface of an object reflects some colours and absorbs others. Black pigments absorb all of the colours of light, thus being perceived as black. Black is therefore the absence of light.

While many metals have a silver color, the color of gold is unique amongst metals with the closest element in color being copper.

Well in this case the answer is no, because generally metals are not volatile, and Gold is a very low volatile metal thus is has no smell.

Unisex Names That Mean Gold

• Aurum (Latin origin): Means ‘gold’.
• Jin (Chinese origin): Means ‘gold’.
• Jinhua (Chinese origin): Meaning ‘the magnificence, brilliance of gold’.
• Jinyu (Chinese origin): Means ‘gold jade’, ‘flawless, gold gem’ or ‘gold feather’.
• Kanok (Thai origin): Meaning ‘gold’.

Chlorophyll absorbs the long wavelengths of light (red) and short wavelengths of light (blue) much more efficiently than the wavelengths that appear green to the human eye, so light reflected by plants is enriched in green.

As such, it was considered extremely bad luck to wear green clothing. Attracting the attention of fairies was so unwelcome that people referred to them as “them that’s with us” or “our good neighbors”. In the very christian post-first crusade Europe, green was the color of Islam, so was associated with evil.

Yes, green is a real color. It is the product of mixing blue and yellow together if talking about in terms of paints and pigments. If we talk about color in terms of light then it is a primary color and isn’t made from mixing colors together.

When Females rated Males, Red, Black, Blue, and Green were rated as basically equally attractive. However, Yellow and White were still rated as less attractive. When Males rated other Males, all the colors were basically the same except White, which was rated as less attractive.

A new study by Missouri School of Journalism researcher Cynthia Frisby found that people perceive a light brown skin tone to be more physically attractive than a pale or dark skin tone.

red

A third of the men found brown hair to be the most attractive; 28.6 percent said they prefer black hair. That means of the total polled, 59.7 percent said they prefer women with dark hair. When it came to women of other hair colors 29.5 percent of men preferred blondes and 8.8 percent of women preferred redheads.

The world’s ugliest color has been described as “death,” “dirty” and “tar,” but this odious hue is serving an important purpose: discouraging smoking. Pantone 448 C, a “drab, dark brown” also called “opaque couché,” was specifically selected after three months and multiple studies by research agency GfK.

One of the study’s main findings was that gray eyes are both the rarest and the statistically most attractive eye color, with hazel and green following closely behind. Conversely, brown eyes are the most common color yet the least attractive to the survey’s respondents.