What is halogens? why are they called very active non metals?

What material makes up ash and pumice?

2 elements don't take part in covalent bonding

Wich is a characteristic shared by all arthropods? All arthropods have an exoskeleton. All arthropods live on land All arthropods have six legs Call arthropods are insects

What is defined as the charge an atom would have in a compound if its bonding electrons were assigned to the more electronegative atom? a) reduction number b) valence c) oxidation number d) electropositivity

1. A gas has a volume of 50.0 mL at a temperature of - 73°C. What volume would the gas occupy at a temperature of - 123°C? * *Celsius

How does phosphorus enter the human body?

When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide