Answer:
Element
Explanation:
A Substance, either an element or compound, is a single kind of matter that is pure, having a consistent makeup and specific properties. Elements consist of a single type of atom while compounds consist of two or more types of atoms.
The single kind of matter that is pure, having a specific makeup and specific properties is termed as a Substance. A substance can be classified as an element or a compound. Elements consist of only one type of atom and cannot be broken down by a chemical change. On the other hand, compounds consist of two or more types of atoms. It's essential to note that both elements and compounds have a constant composition from point to point, but mixtures don't necessarily maintain the same composition throughout.
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b. trigonal planar
c. bent
d. linear
Answer:
Trigonal Planar is the correct answer.
Answer : The correct option is, Electron.
Explanation :
There are three subatomic particles of an atom which are electrons, protons and neutrons. The protons are positively charged, the electrons are negatively charged and neutrons are neutral (no charge).
A neutral atom is an atom that has same number of electrons and protons. When a neutral atom gain an electron, it becomes a negatively charged ion. When a neutral atom lose an electron, it becomes a positively charged ion. That means the atom change when the electron is lost or gained.
Hence, if the atom undergoes a change and becomes a positive ion, in this process the lost subatomic particle is electron.