Answer: K and Na
Explanation:
Potassium and Sodium have a chemical symbol of K and Na respectively.
They have similar chemical properties because both
- have only one valence electron,
- form univalent positive ion when they donate their lone outermost electron as shown below
Na --> Na+ + e-
K --> K+ + e-
- are good reducing agents
- react with cold water vigorously to liberate hydrogen gas and form alkalis, so they are known as alkali metals.
- K and Na are placed in Group 1 of the periodic table.
Thus, unlike the other pairs given, K and Na, have the most similar chemical properties
(4) Zirconium
This element is often used in the chemical production field, and as implants due to its high chemical resistance and stability.
The correct answer is B) Chlorine, Sulfur, and Silicon
I'm 100% sure this is correct
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Answer:
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Explanation:
Answer: D:wavelenght
Explanation: Students will understand that shorter wavelengths have higher frequency and energy.
