Revise smart, understand Better

0.000 s

ENERGY: Action of electricity on materials
ENERGY: Action of heat on materials
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Reactions And Equations
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Symbols, Formulae And Valency
MATTER - PROPERTIES AND TRANSFORMATION: Effect Of Heat On Substances
MATTER - PROPERTIES AND TRANSFORMATION: Introduction To Chemistry - Symbols
MATTER - PROPERTIES AND TRANSFORMATION: Mixtures And Pure Substances
MATTER - PROPERTIES AND TRANSFORMATION: Periodic table - Families of elements and Relative reactivity
MATTER - PROPERTIES AND TRANSFORMATION: Reaction With Oxygen of air
MATTER - PROPERTIES AND TRANSFORMATION: The Atom And Sub-Atomic Particles

An element has an atomic number of 13. What is its electronic configuration?

2, 8, 3.

2, 3, 8.

13.

8, 5.

Which statement accurately describes the nucleus of an atom?

It is negatively charged and surrounds the electrons.

It is positively charged and contains most of the atom's mass.

It contains only electrons.

It is neutral and has no mass.

Which of the following is NOT a sub-atomic particle?

Electron.

Proton.

Nucleus.

Neutron.

Neutrons and ... are found in the nucleus.

Protons.

Nucleon.

Electrons.

Nucleus.

Which statement is a limitation of Bohr's atomic model?

It fails to account for the existence of isotopes.

It does not explain why electrons don't spiral into the nucleus.

It accurately explains the spectra of multi-electron atoms.

It correctly predicts the exact position of electrons.