Explanation:
<h2>Radium(Ra)=> </h2>
atomic number=88
<h2>BERYLLIUM (Be)=></h2>
atomic number =4
why is Ra larger than Be
<h3>1. since the atomic number of Ra is greater than Be, the number of electrons is more, which means there are more number of shells present in Ra than Be. </h3><h2>(atomic Radius)</h2>
<h2>2. the more the valence electron (excluding fully filled ones) the less is the nuclear attraction force</h2><h3>since Ra has more valence electron in its outermost shell, the nuclear attraction force is less which means that Ra 's size is greater than Be.</h3>
hope it helps:)
Answer:
b) Linear molecule with two domains
Explanation:
The image represents a linear molecule with two domains.
The compound shown here is carbon dioxide in which a central carbon atom is surrounded by two oxygen atoms.
- This bond geometry is of the type AX₂
- In this linear molecule the bond angle is a perfect 180°
- The lone pairs are perfectly balanced out and will not cause distortion of the central carbon.
The moles of barium nitrate in the solution has been 0.5 mol. Thus, the correct option is B.
Molarity has been defined as the moles of substance in a liter of solution. Molarity has been expressed as:
<h3>Computation for moles of Barium nitrate</h3>
The given barium nitrate solution has the volume of 0.25 L.
The molarity of the solution has been 2 M.
Substituting the values for the moles of Barium nitrate
The moles of barium nitrate in the solution has been 0.5 mol. Thus, the correct option is B.
Learn more about molarity, here:
brainly.com/question/12127540
Freezing point is the temperature at which a substance undergoes a phase transition from liquid to solid state. Water converts from liquid state to solid ice at a temperature of 
.
Mass is the amount of matter contained in a substance. The SI unit of mass is kilogram. 1 kilogram is equal to 1000 g. One kilogram is defined as the mass of one cubic decimeter of water at the freezing point of water.
I think chemistry field of science
