I. Fill in the Blanks:
1. The Element with zero valency is a ____________.
2. An element Y has a electronic configuration of 2,8,6 . The Element Y is a ____________.
3.An Element X has 6 electrons in its outermost shell, its valency is ___________.
4._________ is a subatomic particle with no charge and unit mass.
5. ______ and _____________ are the examples of Noble elements.
please
Share
Answer:
1 helium
2 oxygen
3 valency 2
4 neutron
5 crypton , xeron
Explanation:
no explanation required .........................................................
Answer:
1. Argon
2. Sulphur
3. 2
4. Neutron
5. Helium , Neon