三氟化氮（NF3）是一种无色、无味、无毒且不可燃的气体，在半导体加工、太阳能电池制造和液晶显示器制造

（1）F2和过量的NH3反应生成NF3和NH4F，反应的方程式为3F2+4NH3

Cu  .

NF3+3NH4F，NF3中含有3个δ键，且孤电子对数为

5?3

2

=1，则应为sp3杂化，空间构型为三角锥形，

故答案为：3F2+4NH3

Cu  .

NF3+3NH4F；sp3杂化；三角锥形；

（2）由于非金属性N＜F，则HF更稳定，故答案为：＜；

（3）N3-含有3个原子和22个电子，价电子总数为16，则对应的等电子体有CO2或CS2、N2O等，故答案为：N2O或CO2；

（4）元素A基态原子的核外电子排布式为1s22s22p63s23p64s2，应为Ca元素，由晶胞结构可知Ca2+离子位于晶胞的定点和面心，共含有8×

1

8

+6×

1

2

=4个，F-离子位于体心，共8个，则化学式为CaF2，

故答案为：CaF2；

（5）晶胞平均含有4个Ca2+，8个F-，质量为

312

NA

g，该离子化合协晶体的密度为a g/cm3，则晶胞的体积是

312

aNA

cm3，故答案为：

312

aNA

．

歌曲名:Didi (Radio Mix)

歌手:Milk &Honey

专辑:Yalla Dance 3

Milk &Honey - Didi

Elbi

Genre/Lang: Pop一航制作

(milk)

On a dark desert day in a land far away

you took my heart - that's the price that i pay.

Why'd you hurt me this way, wish you'd come back and stay.

Just remember the promise we made.

(milk &honey)

didi, didi, didi, didi, zine di wah (2)

didi wah, didi, didi di hazzine didi di ya weeyeaheh

(clap)

(honey)

You used to be my one and only lover.

You went away and left me for another.

Now you wanna come back to me

(both) uh didi didi

(honey)

You tell me we should get together.

I tell you no no, never ever.

Baby can't you see now I'm free

(both) uh didi didi

(milk)

On a dark desert day in a land far away

you took my heart - that's the price that i pay.

Why'd you hurt me this way, wish you'd come back and stay.

Just remember the promise we made.

(milk &honey)

didi, didi, didi, didi, zine di wah *2

didi wah, didi, didi di hazzine didi di ya weeyeaheh

(honey)

ana be hali ya mdala3 matenkebt menak ya leil

ma tenkebat atsaleh

(both) uh didi didi

wa ana be hali ya mdala3 matenkebt menak ya leil

ma tenkebat atsaleh

(both) uh didi didi

(milk)

beaka bafakar feak

wa ana bali mashghoul 3lek

kl munaya ya habibi yelaheek

wahshani 3eyounak wa houbak wa eurbak ya gamil

hayeba 3endi baalak seneen

(milk &honey)

didi, didi, didi, didi, zine di wah *2

didi wah, didi, didi di hazzine didi di ya weeyeaheh

(milk)didi didielwah

(honey) malakt e albi wa bali

(milk) didi didielwah

(honey)anta habi ya ghali

(both)didi wah, didi, didi di hazzine didi di ya weeyeaheh

ah didielwah didi dididi ya sana dididi ah weeeyyyyaaaaa

DiDi!

http://music.baidu.com/song/2800303

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