A. Promethium
B. Ununoctium
C. Francium
D. Technetium
Submitted by: Malik Asghar Hussain
Ununoctium is the heaviest element, but it is man-made. The heaviest naturally-occurring element is uranium (atomic number 92, atomic weight 238.0289).
Related Mcqs:
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B. Platinum
C. Uranium
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- Which is the heaviest metal?
A. Iron
B. Mercury
C. Nickel
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- The most dense and heaviest planet is___________?
A. Jupiter
B. Earth
C. Mars
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- An element that does not occur in nature but can be produced artificially is__________?
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B. Uranium
C. Radium
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A. Zinc
B. Lead
C. Carbon
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- It is observed that the total pressure exerted by air on the man of average size is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of__________?
A. An equal and opposite pressure acts from inside
B. of the height of a man
C. of gravity
D. Earth pulls the man upward
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- The position of an element in the Periodic Table is determined by its __________ number?
A. Electron
B. Proton
C. Neutron
D. None of these - The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect
A. Nitrogen Dioxide (NO2)
B. Chlorofluorocarbons (CFCs)
C. Methane (CH4)
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- Isotopes of an element have the same number of _______?
A. Neutrons
B. Protons
C. Electrons
D. Beta raysUpdated by: Qurrat
- Which one of the following is not a radioactive element ?
A. Cadmium
B. Thorium
C. Radium
D. UraniumSubmitted by: Mansoor Ahmed Suhag