Which of the following pairs of elements are chemically most similar to each other?

A. K and Ca

B. C and Si

C. N and O

D. Sn and As

Name the complex ion [cu (cn) 6]4-. the oxidation number of copper is + 2. enter the name.

What is the molar mass of NaBr

Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a first-order process. Of 25.

Which type of graph is best suited to show the breakdown of how this teacher weighs each category?

A gas has a volume of 590 mL at a temperature of - 55 C. What volume will the gas occupy at 30 C?

How does an electromagnet create a magnetic field

Magnetism, reactivity, and fluorescence are three special properties used to identify minerals. true or false

Which of these molecules is least likely to form a hydrogen bond with a water molecule

George is writing an essay about the role of observation and inference in the development of the atomic theory. He wants to explain why it was more difficult to observe the presence of neutrons in atoms.

Which pair of statements below is correct? Multiple Choice An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another.