Sectional test

Chemistry (Prelims GS) Test 6

• 25 questions
• 20 minutes
• +1 right · −0.25 wrong
• 0 students ranked

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First questions

1. Isotopes of an element have
2. An element has an atomic number of 16. What is the principal quantum number (n) of its outermost electrons ?
3. The quantum numbers of four electrons are given below – (A) n = 3, l = 0, ml = 0, ms = + 1/2 (B) n = 4, l = 1, ml = 0, ms = – 1/2 (C) n = 4, l = 2, ml = – 2, ms = – 1/2 (D) n = 3, l = 2, ml = 1, ms = – 1/2 Correct order of their increasing energies would be – (1) A < D < B < C (2) D < A < C < B (3) A < B < D < C (4) A < B < C < D (5) Question not attempted