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【简答题】
(10分)A、B、C、D、E五种短周期,A、B同主族,C、D同周期,B、E同周期。气体A 2 与气体C 2 混合后点燃能够发生爆炸,且产物在常温常压下是一种无色无味的液体。B、C、E简单离子的核外电子排布相同。E的最高价氧化物可与B的最高价氧化物的水化物反应生成一种易溶于水的的盐,D能形成自然界硬度最大的单质。请根据上述所提供的信息回答下列问题。 (1)写出A、B两种的名称:A________、B________;D在周期表中的位置是________;写出D的最高价氧化物的电子式 。 (2)写出由B和C两形成的原子个数比为1:1的化合物F的电子式 ,其存在的化学键是 、 (3)写出F和A 2 C反应的离子方程式:__________________________ __。 (4)用电子式表示B 2 C形成的过程:_____________________ _________________________。 (5)请写出E的最高价氧化物与B的最高价氧化物的水化物反应的离子反应方程式
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皮皮学刷刷变学霸
举一反三
【简答题】Hurricanes are killer winds, and their ________ power lies in the physical damage they can do. A) cumulative B) destructive C) turbulent D) prevalent
【单选题】The buttocks are ______ most other parts in the body.
A.
likely less to cause fatal damage than
B.
likely less causing fatal damage to
C.
less likely to cause fatal damage than
D.
less likely to cause fatal damage to
【单选题】下列哪项不是新生儿的特殊生理状态
A.
生理性黄疸
B.
乳腺肿大
C.
新生儿溶血症
D.
生理性体重下降
E.
假月经
【单选题】下列哪项不是新生儿特殊的生理状态
A.
乳腺肿大
B.
上皮珠
C.
假月经
D.
体重下降15%
E.
生理性黄疸
【单选题】Electrical wiring on all 'T-Boats' must be ______.
A.
concealed to prevent mechanical damage
B.
concealed so the boat can be maintained more easily
C.
protected from the weather
D.
in an accessible place behind the ceiling
【单选题】Don’t quarrel with your friend, ________will damage your friendship.
A.
who
B.
which
C.
that
D.
what
【简答题】Considering this damage was due to the rough handling by the steamship company , we claimed ______ them ______ recovery of the loss.
【单选题】Once environmental damage ______, it takes many years for the system to recover.
A.
is to do
B.
does
C.
had done
D.
is done
【单选题】下列哪项不是新生儿的特殊生理状态
A.
生理性体重下降
B.
生理性黄疸
C.
生理性贫血
D.
上皮珠和马牙
【单选题】Our school is so famous that _______ people come and visit it every term.
A.
hundred
B.
hundreds
C.
hundred of
D.
hundreds of
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