通常而言,IBDP 化學(xué)被視作一門(mén)比較難的學(xué)科。但對(duì)于一些小伙伴而言,IB化學(xué)卻并不那么難。這兩者并不矛盾。今天帶著大家一起看一道IBDP化學(xué)課程的真題:選擇題(HIGHER LEVEL PAPER 1)。這道題取自于IBDP chemistry specimen paper。
題目1:Which statement about transition metal complex ions is correct?
A. The difference in energy of the d orbitals is independent of the oxidation state of the metal.
B. The colour of the complex is caused by light emitted when an electron falls back from a higher to a lower energy level.
C. The colour of the complex is the colour of the light absorbed when an electron moves from a lower to a higher energy level.
D. The difference in energy of the d orbitals depends on the nature of the ligand.
題目難度:簡(jiǎn)單。
考點(diǎn)分析:考查complex ion
題目分析:A選項(xiàng)oxidation state of the metal是會(huì)影響differencein energy of the d orbitals的,所以錯(cuò)誤;B選項(xiàng)是electron被excited到higher energy level所吸收的光的補(bǔ)色,即為complex的顏色,所以錯(cuò)誤;C選項(xiàng)同上,錯(cuò)誤;D選項(xiàng)正確。
正確答案:D
題目2:Which element is in group 2?

題目難度:簡(jiǎn)單。
考點(diǎn)分析:考查group 2的ionization energy
題目分析:group 2最外層有2個(gè)電子,所以前2個(gè)電子失去的時(shí)候所需能量相差不大,但是第2個(gè)和第3個(gè)相差較大,B選項(xiàng)的第2個(gè)數(shù)和第3個(gè)數(shù)相差較大,所以是屬于group 2的element,所以答案選B。
正確答案:B
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