What is the charge of the ions formed by group 7A elements?
A) +1
B) +7
C) -1
D) -7
Correct Answer:
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Q15: What is the formula for the ionic
Q16: Which is NOT a covalent compound?
A)Br2
B)NO2
C)NH3
D)NaNO2
E)More than
Q17: What is the electron configuration of an
Q18: Which is NOT an ionic compound?
A)KCl
B)Ca(NO3)2
C)CBr4
D)AlBr3
Q19: In bonding,main group elements _ to attain
Q21: What is the charge on the iron
Q22: What is the correct formula for the
Q23: Which chemical formula is correct?
A)Ag(CH3CO2)2
B)K2CN
C)Mg(OH)2
D)MgHCO3
E)More than one
Q24: What is the chemical formula for the
Q25: Which group of the Periodic Table does
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