Multiple Choice
In a simplified model of the atom, which subatomic particle has a positive charge?
2
views
4. Atoms and Elements
Subatomic Particles (Simplified)
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 has 56 protons in its nucleus?
A
Strontium (Sr)
B
Lanthanum (La)
C
Barium (Ba)
D
Cesium (Cs)
Verified step by step guidance1
Recall that the number of protons in the nucleus of an atom defines the element's atomic number.
Identify the atomic numbers of the given elements: Strontium (Sr), Lanthanum (La), Barium (Ba), and Cesium (Cs).
Look up or recall the atomic number for each element: Strontium (Sr) has atomic number 38, Lanthanum (La) has 57, Barium (Ba) has 56, and Cesium (Cs) has 55.
Match the atomic number 56 to the corresponding element, which is Barium (Ba).
Conclude that the element with 56 protons in its nucleus is Barium (Ba).
1:25mWatch next
Master Subatomic Particles (Simplified) Concept 1 with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Subatomic Particles (Simplified) practice set
Problem sets built by lead tutorsExpert video explanations