A的化学式为NH5，常温下呈固态，构成它的所有原子的最外层都符合相应稀有气体原子的最外电子层结构。则下列有关说法中，不正确的是
| A．1mol NH5中含有5NA个N—H键（NA为阿佛加德罗常数的数值） |
| B．NH5中既有共价键，又有离子键。 |
| C．它与水反应的化学方程式为：NH5+H2O==NH3·H2O +H2↑ |
D．NH5的电子式为： |
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