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Science, 28.10.2019 14:45 Grakname

True or false
1.noble gasses could be easily fit into mendeleev's periodic table.
2.no more elements can be accommodated in modern periodic table
3.hydrogen shows similarity to alkali metals and to halogens
4.noble gases are very reactive elements
5.halogens are very reactive elements
6.oxides of alkali metals are soluble in water
7. three atoms of alkali metals are required to form oxides of alkali metals
8.one atom of carbon can combine with four atoms of hydrogen
9.hydrogen makes an ionic bond with non-metals
10.chlorine makes an ionic bond with metals​

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True or false
1.noble gasses could be easily fit into mendeleev's periodic table.
2.no mo...
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