Physics, 31.01.2020 19:47 brutalgitaffe

Asubstance made up of two or more different elements joined by chemical bonds is called a(n) a.. compound. c.. pure substance. b.. atom. d.. solution.

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Answer from: SupremeNerdx

A substance made up of two or more different elements joined by chemical bonds is called a(n)

a.. compound

Answer from: youngchapo813p8d9u1

A substance made up of two or more different elements joined by chemical bonds is called a(n)

a.. compound

Answer from: drubio102004

The word that is described in the item above is letter "A. compound". Most compounds may be classified as either ionic or covalent. Ionic compounds are those that are formed due to transferring of electrons from one atom to the other while covalent compounds are formed by sharing of electrons.

Answer from: mayasiegel5234

Answer from: Quest

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

$_a^z\textrm{x}\rightarrow _{a-2}^{z-4}+_2^4\alpha$

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

$_a^z\textrm{x}+_{-1}^0\textrm{e}\rightarrow _{z-1}^a\textrm{y}$

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases $\gamma -radiations$ . this process does not change the mass number.

$_a^z\textrm{x}^*\rightarrow _a^z\textrm{x}+_0^0\gamma$

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as $\beta ^+$ -decay. in this the mass number remains same.

$_a^z\textrm{x}\rightarrow _{z-1}^a\textrm{y}+_{+1}^0e$

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

Answer from: Quest

the answer would be 32*f

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Asubstance made up of two or more different elements joined by chemical bonds is called a(n) a.. co...

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