Answer:
answer - c
answer - a
Explanation:
<h2>I hope answer correct</h2><h2><em><u>pl</u></em><em><u>ease</u></em><em><u> like</u></em><em><u> me</u></em></h2>
<h3>Answer:</h3>
Rubidium (Rb)
<h3>Explanation:</h3>
Ionization Energy is defined as, "the minimum energy required to knock out or remove the valence electron from valence shell of an atom".
<h3>Trends in Periodic table:</h3>
Along Periods:
Ionization Energy increases from left to right along the periods because moving from left to right in the same period the number of protons (atomic number) increases but the number of shells remain constant hence, resulting in strong nuclear interactions and electrons are more attracted to nucleus hence, requires more energy to knock them out.
Along Groups:
Ionization energy decreases from top to bottom along the groups because the number of shells increases and the distance between nucleus and valence electrons also increases along with increase in shielding effect provided by core electrons. Therefore, the valence electrons experience less nuclear attraction and are easily removed.
<h3>Conclusion:</h3>
Given elements belong to same group hence, Rubidium present at the bottom of remaining elements will have least ionization energy due to facts explained in trends of groups above.
Answer:
NH₄⁺ (aq) + OH⁻ (aq)+ H⁺ (aq)+ Cl⁻ (aq) → NH₄⁺ (aq)+ Cl⁻ (aq)+ H₂O (l)
Explanation:
NH₄OH (l) + HCl (l) → NH₄Cl (aq) + H₂O (l)
This is called a <u>molecular equation</u> because <em>the formulas of the compounds are written as though all species existed as molecules or whole units</em>.
However, because both the acid and the base are strong electrolytes, they are completely ionized in solution. Therefore, the ionic equation is:
NH₄⁺ (aq) + OH⁻ (aq)+ H⁺ (aq)+ Cl⁻ (aq) → NH₄⁺ (aq)+ Cl⁻ (aq)+ H₂O (l)
Answer:
C.
two in the reactants and two in the products
Explanation:
The law of conservation of mass helps us balance chemical equations so that there are the same number and type of atoms in the reactants and products.
There are two nitrate ions in Ba(NO3)2 and two in 2LiNO3.
An example of a case in which a wave is absorbed by matter is light seen through a glass window.
<h3>Can matter absorb a wave?</h3>
Matter is district from waves. A wave is a form of energy which could be absorbed by matter on its path. This is common with both mechanical and electromagnetic waves.
Hence, an example of a case in which a wave is absorbed by matter is light seen through a glass window.
Learn more about matter and waves:brainly.com/question/21180536
#SPJ1
