Answer:
1- C 2-B 3-B - these are ur best answers
Explanation:
Answer. Explanation: Frequency of the sound decreases and the speed of sound becomes 346m/s from near about 1500 m/s.
A green liquid becoming a red liquid
Alkali metal
Explanation:
In general, an alkali metal will be more reactive than an alkaline earth metal in the same period.
What determines reactivity of metals?
The electropositivity of metals determines how reactive they are.
- Electropositivity or metallicity is a measure of the tendency of atoms of an element to lose electrons.
- It is closely related to ionization energy and the electronegativity of an element.
- The lower the ionization energy of an element, the more electropositive or metallic it is
- Also, the more reactive it will be because, it can lose electrons more readily.
- Across a period from left to right, electropositivity decreases and from top to down a group, it increases.
- Since alkali metals are more electropositive than alkali earth metals, they are more reactive and readily lose their only electron.
- This is why the most reactive metal is francium found in the lower left corner on the periodic table.
- For non-metals, electronegativity is the most important factor.
Learn more:
Alkali metals brainly.com/question/6324347
Electronegativity brainly.com/question/11932624
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