Which of the following is NOT an isotope of hydrogen?
Practice 2easy
In the reaction 2H₂ + O₂ → 2H₂O, how many moles of water are produced from 4 moles of hydrogen gas?
Practice 3easy
Which position does hydrogen occupy in the periodic table?
Practice 4easy
What is the oxidation state of hydrogen in the compound H₂O₂ (hydrogen peroxide)?
Practice 5easy
What is the atomic number of hydrogen?
Practice 6medium
Which reaction correctly represents the preparation of hydrogen gas in the laboratory using a dilute acid?
Practice 7medium
The bond dissociation energy of H₂ molecule is approximately 436 kJ/mol. What does this value indicate?
Practice 8medium
In which oxidation state does hydrogen exist in the compound H₂O₂ (hydrogen peroxide)?
Practice 9medium
What is the electron configuration of hydrogen in its ground state?
Practice 10medium
Which isotope of hydrogen contains one proton and one neutron?
Practice 11medium
In the reaction 2H₂ + O₂ → 2H₂O, how many grams of hydrogen are needed to produce 18 grams of water?
Practice 12medium
Which of the following best describes the position of hydrogen in the periodic table?
Practice 13medium
What is the oxidation state of hydrogen in the compound NaH (sodium hydride)?
Practice 14hard
The ionization enthalpy of hydrogen atom is 13.6 eV. Which of the following statements about hydrogen is correct in relation to this value?
Practice 15hard
When hydrogen gas is passed over heated copper oxide, the following reaction occurs: CuO + H₂ → Cu + H₂O. Based on this reaction, which property of hydrogen is being demonstrated?
Practice 16hard
At standard temperature and pressure, hydrogen exists as diatomic H₂ molecules with a bond dissociation energy of approximately 436 kJ/mol. Which of the following correctly explains why hydrogen does NOT readily exist as monatomic H atoms under normal conditions?