Answer:
The correct option is option C
Explanation:
Loss or gain of electron(s) occurs in a type of attraction known as electrovalent or ionic attraction. In this type, there is transfer (or loss) of electron(s) from a metal atom to become positively charged while a nonmetal accepts (or gains) this electron to become negatively charged.
When this does not happen, <u>two metal atoms can become attached by sharing the same electrons through a form of attraction known as covalent bonding.</u> Here, the two atoms share electrons (known as shared pair) together to achieve there octet configuration on the outermost shell.
Answer:
It's the option you have clicked, option 3.
Explanation:
Basic Information
Name:<span> Barium </span>
Symbol:<span> Ba </span>
Atomic Number:<span> 56 </span>
Atomic Mass:<span> 137.327 amu </span>
Melting Point:<span> 725.0 °C (998.15 K, 1337.0 °F) </span>
Boiling Point:<span> 1140.0 °C (1413.15 K, 2084.0 °F) </span>
Number of Protons/Electrons:<span> 56 </span>
Number of Neutrons:<span> 81 </span>
Classification: Alkaline Earth
Crystal Structure:<span> Cubic </span>
Density @ 293 K:<span> 3.51 g/cm</span>3
Color:<span> Silver</span>
Atomic Structure<span> <span>
Number of Energy Levels: 6<span>
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 18
Fifth Energy Level: 8
Sixth Energy Level: 2</span></span></span>
Isotopes<span><span>
IsotopeHalf Life</span><span>Ba-130Stable</span><span>Ba-13111.7 days</span><span>Ba-132Stable</span><span>Ba-13310.5 years</span><span>Ba-133m1.6 days</span><span>Ba-134Stable</span><span>Ba-135Stable</span><span>Ba-135m1.2 days</span><span>Ba-136Stable</span><span>Ba-137Stable</span><span>Ba-137m2.6 minutes</span><span>Ba-138Stable</span><span>Ba-1391.4 hours</span><span>Ba-14012.8 days</span><span>Ba-14118.3 minutes</span><span>Ba-14210.7 minutes</span></span>
Facts
Date of Discovery:<span> 1808 </span>
Discoverer:<span> Sir Humphrey Davy </span>
Name Origin:<span> From the Greek word </span>barys<span> (heavy) </span>
Uses:<span> Medical applications, among others </span>
Obtained From:<span> barytine, whiterite </span>
Molarity is calculated using the following equation:
number of moles solute/ number of litres of solvent.
Number of moles = 0.2 moles (given)
1 litre = 1000 ml
Therefore, 200 ml = 0.2 litres
Using the previously mentioned equation, we can calculate molarity as follows:
Molarity = 0.2/0.2 = 1
