4.98 * 10³ in standard form

He table below gives the numbers of protons, electrons, and neutrons in four atoms. Atom Number of protons Number of neutrons Number of electrons 1 9 8 9 2 9 9 8 3 9 9 10 4 9 10 9 Based on the table, which atom has a charge of - 1?

The sea of electrons in metals acts as

A 28.5 g iron shot is added to a graduated cylinder containing 45.5 ml of water. The water level rises to the 49.1 ml mark. Calculate the density of the iron shot.

A chemist mixes sodium with water and witnesses a violent reaction between the metal and water. this is best classified as

Which are characteristic of eukaryotic organisms? Select three options

Chemical or physical properties? titanium is less dense than water

Choose the element that would be the most reactive of the three. A. K c. Na b. Fr

Explain why iron structures need protection from corrosion while aluminium structures do not?

What is the charge associated with each side of the HI molecule? What is the percent ionic character of the H-I bond?

Write the symbol for the ion formed when each element gains electrons and attains a noble-gas electron configuration. Br, H, Se.