Atom <span>Appears in these related concepts: Early Ideas about Atoms, Stable Isotopes, and Atomic Theory of Matter</span>balanced equation <span>Appears in these related concepts: Effect of a Common Ion on Solubility, Reaction Stoichiometry, and Mole-to-Mole Conversions</span>bond <span>Appears in these related concepts: Factors Affecting the Price of a Bond, Current Maturities of Long-Term Debt, and Preferred Stock</span>chemical reaction <span>Appears in these related concepts: Periodic Table Position and Electron Configuration, Free Energy Changes for Nonstandard States, and Physical and Chemical Changes to Matter</span>chemistry <span>Appears in these related concepts: Description of the Hydrogen Atom, Mass-to-Mole Conversions, and General Trends in Chemical Properties</span>element <span>Appears in these related concepts: Development of the Periodic Table, Elements and Compounds, and The Periodic Table</span>energy <span>Appears in these related concepts: Surface Tension, Energy Transportation, and Introduction to Work and Energy</span>gas <span>Appears in these related concepts: Oxidation Numbers of Metals in Coordination Compounds, Irreversible Addition Reactions, and Microstates and Entropy</span>isolated system <span>Appears in these related concepts: Conservation of Mechanical Energy, Internal Energy, and Comparison of Enthalpy to Internal Energy</span>liquid <span>Appears in these related concepts: Overview of Atomic Structure, Types of Synthetic Organic Polymers, and Three States of Matter</span>matter <span>Appears in these related concepts: Physical and Chemical Properties of Matter, Introduction: Physics and Matter, and The Study of Chemistry</span>mole <span>Appears in these related concepts: Avogadro's Number and the Mole, Molar Mass of Compounds, and Concept of Osmolality and Milliequivalent</span>solid <span>Appears in these related concepts: Extractive Metallurgy, Metagenomics, and Some Polycyclic Heterocycles</span>system <span>Appears in these related concepts: Definition of Management, <span>Local, regional, national, international, and global marketers </span>, and Additional cost and energy saving suggestions for pumps</span>
c) atomic number / alkaline earth metals/ and halogens
Explanation:
Elements of modern periodic table are arrang in atomic number; for its electron configuration and its chemical properties. This arrangement shows periodic trends.
Alkaline earth metals are a group of elements that are located in group 2 of the Periodic Table and are the following: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radio (Ra).
The Halogens are the chemical elements that form group 17 (XVII A, previously used) or group VII A of the periodic table: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and teneso (Ts)
