alkaline-earth metal: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “alkaline-earth metal” mean?
Any of the metallic elements found in group 2 of the periodic table, characterised by forming alkaline solutions (hydroxides) when reacting with water.
Audio
Pronunciation
Definition
Meaning and Definition
Any of the metallic elements found in group 2 of the periodic table, characterised by forming alkaline solutions (hydroxides) when reacting with water.
In a broader scientific or popular science context, may refer to the general chemical properties, industrial applications, or natural occurrence of these metals (beryllium, magnesium, calcium, strontium, barium, radium).
Dialectal Variation
British vs American Usage
Differences
No significant lexical or semantic differences. Spelling conventions for related terms follow national norms (e.g., 'behaviour' vs. 'behavior').
Connotations
None beyond the strict scientific definition.
Frequency
Equally rare outside scientific/educational contexts in both dialects.
Grammar
How to Use “alkaline-earth metal” in a Sentence
Alkaline-earth metals typically HAVE a valency of two.Magnesium IS AN alkaline-earth metal.Vocabulary
Collocations
Examples
Examples of “alkaline-earth metal” in a Sentence
adjective
British English
- The alkaline-earth metal properties were clearly demonstrated.
American English
- Alkaline-earth metal chemistry is a fundamental topic.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in chemistry, geology, and materials science lectures, textbooks, and research papers.
Everyday
Extremely rare; only in popular science discussions or advanced educational settings.
Technical
The primary context of use, in chemical analysis, industrial processes (e.g., metallurgy), and laboratory reports.
Vocabulary
Synonyms of “alkaline-earth metal”
Neutral
Vocabulary
Antonyms of “alkaline-earth metal”
Watch out
Common Mistakes When Using “alkaline-earth metal”
- Misspelling as 'alkaline-earth metal' (missing hyphen).
- Confusing it with 'alkali metal' (Group 1).
- Using it as a countable noun without an article (e.g., 'It is alkaline-earth metal' instead of 'It is an alkaline-earth metal').
FAQ
Frequently Asked Questions
Yes, radium is chemically a member of Group 2 and thus an alkaline-earth metal, though its radioactivity is its dominant characteristic in modern contexts.
Beryllium is chemically classified in Group 2 and shares the +2 oxidation state, but its small atomic size leads to atypical properties, including a covalent oxide/hydroxide that is amphoteric rather than strongly alkaline.
Historically, 'earth' was an alchemical term for a substance that was insoluble in water and resistant to fire. The oxides of these metals were known as 'alkaline earths' because they were found in the Earth's crust and produced alkaline solutions.
Yes. Magnesium is used in alloys and fireworks; calcium in cement and dietary supplements; strontium in fireworks and glass for CRT televisions; barium in medical imaging and glassmaking.
Any of the metallic elements found in group 2 of the periodic table, characterised by forming alkaline solutions (hydroxides) when reacting with water.
Alkaline-earth metal is usually technical/scientific in register.
Alkaline-earth metal: in British English it is pronounced /ˌæl.kə.laɪn ˈɜːθ ˌmet.əl/, and in American English it is pronounced /ˌæl.kə.laɪn ˈɝːθ ˌmet̬.əl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Remember the group: Be (Beryllium) Mighty (Magnesium) Ca (Calcium) Soldiers (Strontium), Battle (Barium) Radically (Radium). All are Alkaline-Earth Metals.
Conceptual Metaphor
The metaphor is embedded in the name: 'earth' refers to their oxides (historically called 'earths'), and 'alkaline' to the basic (alkaline) nature of those oxides.
Practice
Quiz
What is the primary characteristic of alkaline-earth metals?