d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge - Page 478

Question 2386

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What does a positive electron gain enthalpy indicate?

Energy is released when an electron is added to the atom.
Energy must be supplied to add an electron to the atom.
The atom readily gains an electron.
The atom forms a positive ion easily.

Question 2387

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What is the general trend for first ionization enthalpy down a group?

It generally increases.
It generally decreases.
It remains constant.
It first increases then decreases.

Question 2388

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What is the general trend for electron gain enthalpy across a period from left to right?

It generally becomes less negative (less exothermic).
It generally becomes more negative (more exothermic).
It remains constant.
It becomes positive.

Question 2389

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Which element among I-VI is most likely to be a halogen?

Element I
Element III
Element IV
Element VI

Question 2390

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Which element among I-VI is most likely to be an alkaline earth metal?

Element I
Element II
Element IV
Element VI