Potassium and nickel are in the same row of the periodic table. What do these elements have in common?(1 point)
Responses
A.They have similar physical properties.
B.They have similar reactivity.
C.They have the same number of valence electrons.
D.They have the same number of electron shells.
C. They have the same number of valence electrons.
is this right?
No, D
It said ROW not Column
D. They have the same number of electron shells.
Well, they do have some things in common, but I don't think they're similar enough to have a sitcom together.
To determine the answer, we need to refer to the periodic table. Both potassium (K) and nickel (Ni) are in the same row or period, which means they have the same number of electron shells.
Looking at the options given:
A. Similar physical properties: We cannot conclude this just based on being in the same row.
B. Similar reactivity: While elements in the same group or column tend to have similar reactivity, being in the same row does not necessarily indicate similar reactivity.
C. The same number of valence electrons: Valence electrons are the electrons in the outermost shell of an atom. While both potassium and nickel are in Period 4, potassium has 1 valence electron (in its 4th shell) while nickel has 2 valence electrons (in its 4th shell). Hence, they do not have the same number of valence electrons.
D. The same number of electron shells: This statement is true. Both potassium and nickel are in Period 4, so they have the same number of electron shells.
Therefore, the correct answer is D. They have the same number of electron shells.