Chemistry

Which of the following elements can conveniently be placed in two groups in the periodic table?

A. Carbon B. Copper C. Hydrogen D. Oxygen Correct Answer: Option C C. Hydrogen

6 years ago

Chlorine, bromine and iodine belong to the same group and?

A. are gaseous at room temperature. B. form white precipitate with AgNO3(aq) C. react violently with hydrogen without heating D.…

6 years ago

Which of the following arrangements is in order of increasing metallic property?

A. Li < Na< k B. Na < Li < K C. K D. K < Li < Na Correct…

6 years ago

The energy change that accompanies the addition of an electron to an isolated gaseous atom is?

A. bond energy B. electronegativity C. electron affinity D. ionization energy Correct Answer: Option C C. electron affinity

6 years ago

Which of the following hydrohalic acids is the weakest?

A. HBr B. HCI C. HF D. HI Correct Answer: Option D D. HI

6 years ago

Rare gases are stable because they?

A. contain equal number of protons and neutrons B. contain more electrons than protons C. are chemically active D. have…

6 years ago

Which of the following elements would produce coloured ions in aqueous solution?

A. Calcium B. lron C. Magnesium D. Sodium Correct Answer: Option B B. lron

6 years ago

How many isotopes has hydrogen?

A. 2 B. 3 C. 4 D. 5 Correct Answer: Option B B. 3

6 years ago

Which of the following electrons configurations correctly represents an inert element?

A. 1s² 2s² 2p4 B. 1s² 2s² 2p6 3s² C. 1s2 2s² 2p6 3s² 3p4 D. 1s² 2s² 2p6 Correct…

6 years ago