alleryStart learning →The bond order of the oxygen molecule O₂ (by molecular orbital theory) is
- 2
- 1
- 2.5
- 3
Show answer and solution
Correct answer: A. 2
MO config gives bond order = (bonding − antibonding)/2 = (8−4)/2 = 2, consistent with the O=O double bond.
Indian Navy INET Atoms — practice questions
Explore 27 free Atoms questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
Practise Atoms with Quill →Atoms questions and exercises with answers
Showing questions 1–27 of 27.
The bond order of the oxygen molecule O₂ (by molecular orbital theory) isRead the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →True or false: Bohr's modelRead the answer and worked solution →Complete the reason Bohr's model failsRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Match each quantum number to what it is calledRead the answer and worked solution →True or false: the quantum mechanical modelRead the answer and worked solution →Order the structure: from atom down to electronRead the answer and worked solution →Complete the (n + l) ruleRead the answer and worked solution →True or false: orbital energiesRead the answer and worked solution →Match each rule to what it forbids or requiresRead the answer and worked solution →Tap every statement Hund's rule requiresRead the answer and worked solution →The fundamental particlesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Which principle is being described?Read the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every statement true of the Schrodinger modelRead the answer and worked solution →Reading the models backRead the answer and worked solution →Assertion and reason: filling orbitalsRead the answer and worked solution →True or false: shells and subshellsRead the answer and worked solution →Complete the two filling rulesRead the answer and worked solution →
Worked practice questions
Order the atomic models as they were proposed
Read exercise and reference answers
- Steps
- Dalton: the atom is the ultimate indivisible particle
- Thomson: a sphere of positive charge with electrons embedded
- Rutherford: a tiny dense nucleus with electrons revolving around it
- Bohr: electrons in fixed circular orbits of definite energy
- Schrodinger: a wave equation giving energy states and orbitals
syllabus walks through them in this order, each answering what the previous one could not: Dalton 1808, Thomson 1898, Rutherford 1909, Bohr 1913, Schrodinger 1926. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.
Match each scientist to their model
Read exercise and reference answers
- Matching pairs
- Left
- Dalton
- Right
- atom as the ultimate indivisible particle
- Left
- Thomson
- Right
- electrons embedded in a sphere of positive charge
- Left
- Rutherford
- Right
- a tiny positively charged nucleus at the centre
- Left
- Bohr
- Right
- electrons confined to certain circular orbits
- Left
- Schrodinger
- Right
- a wave equation for electron distribution
Five models, five names. Source: syllabus Chemistry Part I, Ch 2 Structure of Atom.
How to practise
- Choose a Atoms question and try to work out your answer.
- Open the question to check the correct answer and read its worked solution.
- Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.