Answer:
I believe it to be a difference in isotopes.
Explanation:
This is because since both are the same element it cannot be allotropes which are on a molecular level so it must be isotopes.
the atomic number of Cd is 48
atomic number gives the number of protons in the atom
elements in their ground state, the number of protons is equal to the number of electrons
therefore number of electrons is 48
the condensed electronic configuration is [Kr} 4d¹⁰ 5s²
the outermost energy shell is the 5th energy shell with 2 electrons in the 5s subshell.
Valence electrons are the electrons in the outermost energy shell that are involved in chemical bonding.
there are 10 electrons in the 4d subshell however 4th energy shell is not the outermost energy shell therefore these electrons are not regarded as valence electrons
In Cd there are 2 electrons in the outermost energy shell therefore Cd has 2 valence electrons.
answer is 2
Answer:
Milk
Explanation:
Typically, the lower a substance is on the pH scale, the higher its acidity is and the higher the H+ concentration is. Conversely, the higher a substance is on the pH scale, the more basic it is and the lower the H+ concentration is. To be considered an acid, a substance has to be below 7 on the pH scale, since 7 is neutral. The highest substance on the pH scale that is still below 7 is milk, with a pH of about 6.5. Therefore, this is the answer. Hope this helps!
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