Answer:
the answer is B
Explanation:
giving an atom a charge will not change what element it is
For better representation, let me rewrite the electronic configuration:
<span>1s</span>²<span>2s</span>²<span>2p</span>⁶<span>3s</span>²<span>3p</span>⁶<span>4s</span>²<span>3d</span>⁴
The exponents represent the number of electrons in the designated subshell. Thus, the total number of electrons are:
# of electrons = 2+2+6+2+6+2+4 = 24
Assuming this is in neutral state, the element with an atomic number of 24 is Chromium. Thus, the answer is Cr.
Answer:
Arrhenius
H, H₃O⁺
OH, OH⁻
Explanation:
The earliest and simplest definition of acids and bases was suggested by <u>Arrhenius</u>. He/They defined an acid as a substance with <u>hydrogen</u> in its formula that dissociates in water to yield <u>H₃O⁺ </u>and a base as a substance with <u>OH</u> in its formula that dissociates in water to yield<u> OH⁻</u>.
Acid:
An acid is the substance that sour in taste and turns the color of litmus paper from blue to red.
pH of acid is less than seven.
Base:
An acid is the substance that bitter in taste and turns the color of litmus paper from red to blue.
The pH of base is 7-14.
Arrhenius gives the simplest definition of acid and base.
Arrhenius acid:
A substance that increase the concentration of hydronium ion in solution is called acid.
HNO₃ → H⁺ + NO₃⁻
(H₂O)
Arrhenius base:
A substance that increase the concentration of OH⁻ ion in solution is called base.
KOH → K⁺ + OH⁻