3 years ago

An element is made up of only one kind of _

1 answer:

3 0

Answer:

A chemical element is a substance that contains only one type of atom. If a substance contains more than one type of atom, it is a compound. An element can be a solid, liquid or gas. The smallest particle of such an element is an atom.

Explanation:

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Atoms and ions are held together by..

Anuta_ua [19.1K]

Answer:

chemical bonds

Explanation:

The atoms in chemical compounds are held together by attractive electrostatic interactions known as chemical bonds. Ionic compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero. The ions are held together in a regular spatial arrangement by electrostatic forces.

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2 years ago

5. Why are the poppy seeds placed in different places (not together)?

Mademuasel [1]

In the atom model, the poppy seeds are placed in different places to represent the different position of electrons.

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2 years ago

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Enter a balanced nuclear equation for the production of lead-212, used in the treatment of some cancers, from the beta decay of

MariettaO [177]

Answer:

$\frac{212}{81}Tl ------>\beta + \frac{212}{82}Pb$

Explanation:

Beta emission involves the conversion of a neutron to a proton, an electron and a neutrino. This leads to a reduction in the neutron-proton ratio.

During a beta emission, the mass number of the parent and daughter nuclei remain the same. The atomic number of the daughter nucleus increases by one unit above that of the parent nucleus as we can see from the equation.

Hence, the daughter nucleus is found one place after its parent in the periodic table.

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2 years ago

Write the chemical symbol for the isotope of cobalt with 37 neutrons

oksano4ka [1.4K]

Answer:

64Co27

Explanation:

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3 years ago

True or false?

sertanlavr [38]

The answers are :
1 - F
2- T

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2 years ago

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