A. Atomic number
B. Relative abundance
C. Electronic configuration
D. All of the above
0
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The number of peaks obtained in mass spectrometry shows____________________?
0
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Empirical formula of chloroform is____________________?
A. Relative abundance
B. Average mass of element
C. Number of isotopes
D. Relative isotopic mass
4
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Molecular mass of water (18g) means__________________?
A. CH2 C12
B. CH3C1
C. CC14
D. CHCL3
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Which of the following statements about isotopes is correct ?
A. 1-mole molecules of water
B. 1-gram molecule of water
C. 3-gram atoms
D. all
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One mole of CO2 contains?
A. Isotopes with odd atomic number are abundant
B. Isotopes with odd atomic number and even mass number are abundant
C. Isotopes with even atomic number and even mass number are abundant
D. Isotopes with even atomic number and odd mass no are abundant
1
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The number of isotopes of elements with even mass number and even atomic number are ________________?
A. 6.022 x 1023 atoms of oxygen
B. 22-gram electrons
C. 6.022 x 1023 atms of carbon
D. both B. & C.
0
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Which of the following terms is not used for ionic compound ?
A. 280
B. 300
C. 154
D. 54
0
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moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?
A. formula unit
B. empirical formula
C. molecular formula
D. formula mass
1
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Which one of the following has the maximum number of isotopes ?
A. 0.18 mole
B. 0.27 mole
C. 0.24 mole
D. 0.09 mole