Chemistry

Which of the following statements about sodium is not true?

A. Na+ is smaller in size than Na B. Na is smaller in size than Na+ C. Na+ has fewer…

6 years ago

Which of the following properties of atoms generally increases down a group in the periodic table?

A. Electron affinity B. Electronegativity C. Ionic radius D. lonization energy Correct Answer: Option C C. Ionic radius

6 years ago

A transition metal would be expected to?

A. from oxides with different formulae B. have strong oxidizing ability C. have low density D. have an atomic structure…

6 years ago

In which of the following atoms is the ionic radius larger than the atomic radius? [11Na, 12Mg,13AI,17CI]

A. Aluminium B. Chlorine C. Magnesium D. Sodium Correct Answer: Option B B. Chlorine

6 years ago

Which of the following properties is characteristic of the halogens?

A. Ability to accept electrons readily B. Ability to donate electrons readily C. Ability to from basic oxides D. Formation…

6 years ago

Which of the following statements about rare gases are correct?

A. Their outermost shells are fully filled B. They are generally unreactive C. Their outermost shells are partially filled D.…

6 years ago

When sodium atom form the ion Na+?

A. it gains one proton B. it achieves a noble gas configuration C. its atomic number increases D. it gains…

6 years ago

Which of the following substances causes the depletion of the ozone layer in the atmosphere?

A. Carbon (IV) oxide B. Chlorofluorocarbon C. Sulphur (IV) oxide D. Hydrocarbons Correct Answer: Option B B. Chlorofluorocarbon

6 years ago

Which of the following alloys is mainly used in making statues?

A. Brass B. Bronze C. Duralumin D. Steel Correct Answer: Option B B. Bronze

6 years ago

Aluminium is a good roofing material because it?

A. is strong and does not conduct heat and electricity B. readily absorbs light C. forms an oxide film over…

6 years ago