calcium and strontium are close to one another on thw oeriodic table. what do you know about their ionization energies ,their el
ectron configurations and their charasteristics based on their position in the periodic table?
1 answer:
Both Ca and Sr are in Group 2 of the Periodic Table, with Sr below Ca (see image)..
<em>Ionization energies </em>
They are both metals, so they have relatively <em>low ionization energies</em>.
Sr is below Ca in the Group, so Sr has the lower ionization energy.
<em>Electron configurations </em>
Their electron configurations both end in <em>ns²</em>.
For example, the electron configuration of Ca is [Kr]<em>4s²</em> and that of Sr is [Kr]<em>5s²</em>.
<em>Physical chsrscteristics: </em>
- metallic lustre
- malleable
- ductile
- good conductors of heat and electricity
<em>Chemical characteristics</em>
Both metals react with
• <em>Hydrogen</em> to form hydrides: M + H₂ ⟶ MH₂
• <em>Oxygen</em> to form oxides: 2M + O₂ ⟶ 2MO
• <em>Nitrogen</em> to form nitrides: 3M + N₂ ⟶ M₃N₂
• <em>Halogens</em> to form halides: M + X₂ ⟶ MX₂
• <em>Water</em> to displace hydrogen: M + 2H₂O ⟶ M(OH)₂ + H₂
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The answer for the following question is answered below.
- <em><u>Therefore the new pressure of the gas is 1.76 atm.</u></em>
Explanation:
Given:
Initial pressure of the gas = 1.34 atm
Initial temperature of the gas = 273 K
final temperature of the gas = 312 K
To solve:
Final temperature of the gas
We know;
From the ideal gas equation
P × V = n × R × T
So;
from the above equation we can say that
<em>P ∝ T</em>
= constant
=
Where;
= initial pressure of a gas
= final pressure of a gas
= initial temperature of a gas
= final temperature of a gas
=
= 1.76 atm
<em><u>Therefore the new pressure of the gas is 1.76 atm.</u></em>