1.零族不是主族,Ⅷ族不属于副族,隋性气体元素不属于非金属元素. 2.元素周期律是指元素的性质随着原子序数的递增而呈周期性变化的规律,不是随着原子量的递增而呈周期性变化的规律. 3.存在离子键的化合物一定是离子化合物;①离子化合物中可不含共价键,如:氯化钠; 1. The zero family is not the main group, and the group VIII does not belong to the subgroup. The inert gas element does not belong to the non-metal element. 2. The elemental cycle law refers to the law that the nature of the element changes periodically with increasing atomic number, not With the increase of the atomic weight, the law of periodicity changes. 3. The compounds with ion bonds must be ionic compounds; 1 The ion compounds can contain no covalent bonds, such as: sodium chloride;