Which of the following is true about an atom of iron and an atom of copper? 1 they have different masses. 2 both have the same properties. 3 they have an equal number of protons. 4 both have different types of sub-atomic particles.

Option (1) is the correct answer.

Explanation:

Both iron and copper atoms are transition elements. Atomic number of iron is 26 and atomic number of copper is 29.

As it is known that when atoms are neutral then number of protons and number of electrons are equal.

Hence, number of protons in iron and copper are different. Whereas atomic mass of iron is 55 g/mol and atomic mass of copper is 63 g/mol.

All the atoms consist of three sub-atomic particles that are protons, neutrons and electrons.

Thus, we can conclude that they have different masses, is true about an atom of iron and an atom of copper.

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.