Question

2 multiple choice 2 points
how are elements arranged in the periodic table?
increasing atomic number
decreasing atomic mass
alphabetical order
increasing electronegativity
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3 fill in the blank 2 points
the atomic number of an element is determined by the number of choose your answer..
choose your answer..
nucleons in its nucleus
protons in its nucleus
neutrons in its nucleus
electrons in its nucleus
4 multiple choice 2 points
what is the total number of known elements in the periodic table?
80
92
118
150
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Explanation:

• Question 2: The modern periodic table arranges elements by increasing atomic number. Atomic number is the number of protons in an atom's nucleus. This arrangement helps in organizing elements based on their fundamental properties.
• Question 3: The atomic number of an element is defined as the number of protons in its nucleus. Protons are positively - charged particles in the nucleus, and each element has a unique number of protons.
• Question 4: As of now, there are 118 known elements in the periodic table. New elements are still being synthesized in laboratories, but the currently recognized number is 118.

Answer:

• Question 2: Increasing atomic number
• Question 3: protons in its nucleus
• Question 4: 118