Multiple Choice
Which element has 35 protons in its nucleus?
1
views
4. Atoms and Elements
Periodic Table: Element Symbols
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which element (neutral atom) has 7 electrons?
A
Nitrogen (N)
B
Fluorine (F)
C
Oxygen (O)
D
Carbon (C)
Verified step by step guidance1
Recall that a neutral atom has an equal number of protons and electrons. Therefore, the number of electrons in a neutral atom is the same as its atomic number.
Identify the atomic numbers of the given elements: Carbon (C) has atomic number 6, Nitrogen (N) has atomic number 7, Oxygen (O) has atomic number 8, and Fluorine (F) has atomic number 9.
Since the question asks for the element with 7 electrons, look for the element whose atomic number is 7.
Match the atomic number 7 to the element Nitrogen (N), which means a neutral nitrogen atom has 7 electrons.
Conclude that the element with 7 electrons is Nitrogen (N).
4:01mWatch next
Master Periodic Table: Symbols Concept with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Periodic Table: Element Symbols practice set
Problem sets built by lead tutorsExpert video explanations