A triple beam balance is used to measure the mass of objects.
Answer:
Sodium is more reactive than lithium because as we move down a group it is easy to lose electrons as the number of shells increases and nuclear charge decreases. As valence electrons take part in chemical reaction and its easier to lose electrons as we move down a group chemical reactivity increases. Therefore, sodium is more reactive than lithium.
Explanation:
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When cohesive force is stronger than the adhesive force: concave up meniscus, water forms droplets on surface
Answer:
Fluorine
Explanation:
It is a non-metal does not conduct electricity