Isolated atom basically means atom which exists separatly without any bonding with other atoms. It can only be acheived experimentaly because normally all atoms are bonded together by strong nuclear forces and its really hard to isolate a single atom.
Answer:It has the lowest effective nuclear charge of the four new elements.
Answer:
the color of the litmus paper will turn into blue color because sodium carbonate is basic in nature
Answer: an invisible line around which an object rotates, or spins.
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