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Glite Dictionary
atomic number 7

atomic number 7

3.7
A colorless, odorless gas that makes up most of the air and is needed by living things
  • noun
  • /əˈtɑːmɪk ˈnʌmbər sɛvən/
  • Specialized
translation icon : número atómico 7
  • The Earth's atmosphere is composed mainly of atomic number 7.

Examples

  • The symbol for atomic number 7 is N.

  • Plants absorb atomic number 7 from the soil as part of their growth cycle.

  • Scientists referred to atomic number 7 in their research on the air's composition.

  • Plants need atomic number 7 for growth.

  • The Earth's atmosphere is composed mainly of atomic number 7, which is essential for life.

  • Scientists referred to atomic number 7 in their research on how nitrogen affects climate change.

  • Plants absorb atomic number 7 from the air during photosynthesis to create their food.

Synonyms

nitrogen
vsatomic number 7
  • Specialized
81 3.2

A colorless gas that makes up most of the air and helps plants grow

is the same element named by a numeric identifier rather than the name

Surface Forms

atomic number 7 singular
atomic numbers 7 plural

Morphology

atomic + number + seven

The phrase is compositionally built from 'atomic' + 'number 7' and transparently denotes the element whose atomic number is seven. However, identifying that this specific number corresponds to nitrogen requires specialized chemistry knowledge (periodic table) and the technical term 'atomic number' may be unfamiliar to a B1 learner, so the meaning is only partially predictable from the parts alone.

Etymology

Atomic number 7 comes from how scientists name elements by counting tiny particles inside an atom. The atom with seven of these particles, called 'protons', is 'nitrogen', the common gas in the air, so atomic number 7 means 'nitrogen' today.