Sodium and potassium belong to the same group of the Periodic Table. This is because?
both are metals
both are soft and lighter than water
both form cations by losing electrons
both have identical electronic configuration
both react with water vigorously
Explanation
Video Explanation
No video available
Post your Contribution
Discussions (33)
Option A is inaccurate because there are several metals known, be it transition or earth metals.
Option B would be inaccurate as well because Calcium is also a soft metal.
Option C should be fair but transition metals such as iron also form cations,as well as calcium.
Option E isn't appropriate because even calcium reacts with water,though not vigorously.
Option D is appropriate because both elements share similar electronic configuration in their outermost shell and would give off their electrons most easily to attain the electronic configuration of the inert gases.
this is bery wrong
elements in the same group in the eriodic tble have the same electronic configuration and the same number of electrons in their outer shell
Na-2 8 1
K- 2 8 8 1
if we follow their answer we can also say aluminium belongs to the same group as sodium because they all lose electrons to form cation
From what we are given
I would say the most preferred answer is D
thats because
the electronic configuration of Na is-2,8,1
while that of K is-2,8,8,1
Their electronic configurations are similar because in their s orditals(nS¹) n-representing their quantum number, they both have one electron.
REF -@péŕmúťáťé
OYA OYA MAKE I TALK MY OWN
Sodium and potassium belong to the same group of the Periodic Table because **both form cations by losing electrons**. This is the defining characteristic of elements in the same group in the Periodic Table. They have the same number of valence electrons, which influences their chemical behavior. In this case, both sodium and potassium have one electron in their outermost shell, and they tend to lose this electron in reactions, forming a cation. So, the correct answer is **C**.
While options A, B, and E are also true for both sodium and potassium, they are not the primary reason these elements are grouped together in the Periodic Table. Option D is incorrect because while sodium and potassium have the same type of electronic configuration, they do not have identical electronic configurations. Sodium has 11 electrons (configuration: 1s² 2s² 2p⁶ 3s¹) and potassium has 19 electrons (configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹).
The correct answer is:
C. both form cations by losing electrons
Explanation:
Sodium (Na) and potassium (K) belong to Group 1 (Alkali Metals) of the Periodic Table. They have one valence electron in their outermost shell, which they readily lose to form +1 cations (Na⁺ and K⁺). This is a key characteristic of alkali metals, making option C the best choice.
Why not the other options?
A. both are metals → True, but not the reason they are in the same group.
B. both are soft and lighter than water → Not entirely correct. Potassium is lighter than water, but sodium is slightly denser.
D. both have identical electronic configuration → Incorrect. They have similar configurations but not identical:
Na: 1s² 2s² 2p⁶ 3s¹
K: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
E. both react with water vigorously → True, but again, this is a property of alkali metals, not the reason they belong to the same group.
Thus, C is the most scientifically accurate answer.
The correct answer is c
Elements in the same group have the same number of valence electrons
While those in the same period have the same number of electronic shell
Myschool pls correct it
The correct option is D
Because they have the same number of valence electrons
Lithium, sodium and potassium have same number of valence electron i.e. 1, hence they belong to same group. The group is called alkali metals group because all these elements form oxides which dissolve in water to form alkali. Was this answer helpful?
And again,Sodium and potassium, atomic numbers 11 and 19, respectively, are highly reactive metals with similar chemical properties, both listed in group 1, the alkali metals, of the periodic table. Both have a single valence electron in their outer shell, which they readily donate, creating positive ions, or Na+ and K+ cations.
2,8,1 and 2,8,8,1 is identical
*If we are to use the concept of both forming cations by losing electrons then we are indirectly saying Sodium and Calcium should be in the same group because they both do lose electrons as well.
Please correct the answer or provide explanation for your answer
A is too broad for that to be a grouping criteria
B is a physical property which is not what makes them a group
C all metals do this forming cations by loss is just the same as A
E even calcium reacts with water
D is appropriate cause the option didn't say exact it said similar which is the case the both have 1 valence electron and other completely filled shells
2 8 1 - Na
2 8 8 1 - K
Sodium and potassium belong to the same group of the Periodic Table. This is because?
A. both are metals
B. both are soft and lighter than water
C. both form cations by losing electrons
D. both have identical electronic configuration
E. both react with water vigorously
their answer would have been correct if they said they both loose one electron to form cations
